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A

Accio: Incantation for a summoning charm.
Acid Pops: Wizarding sweets, available at Honeydukes in Hogsmeade, that burn a hole in your tongue.
Aconite: A plant, also known as Monkshood or Wolfsbane, used in potions.
Agrippa: A wizard depicted on a wizard trading card.
Aguamenti: A spell to create water.
Alchemy: The medieval science that was founded on the search to turn any metal into gold.
Alecto: A Death Eater, sister to Amycus.
Alohomora: Door-unlocking spell.
Amortenti: The most powerful love potion in the world.
Amycus: Death Eater, brother to Alecto.
Anapneo: A spell used to help when someone is choking.
Animagi: Wizards who can turn into animals at will. The singular form is animagus.
Aparecium: Spell to make invisible ink visible.
Apparate: To transport oneself instantly to any destination.
Aragog: A huge spider that lives in the Forbidden Forest.
Arithmancy: Ancient study of the magical properties of numbers.
Astronomy: Study of the stars and planets.
Aunt Marge: Dudley Dursley's dreadful aunt and sister to Vernon Dursley.
Auror: Professional Dark-wizard-catcher.
Avada Kedavra: The killing curse, which brings instant death in a flash of green light. It is one of the three Unforgivable Curses.
Azkaban: The prison fortress where wizarding criminals are sent and which is guarded by Dementors—who drain peace, hope and happiness out of humans.

B

Bagman, Ludo: Head of the Department of Magical Games and Sports at the Ministry of Magic. A former Quidditch player, he was a Beater on the Wimbourne Wasps team and played for England.
Bagshot, Bathilda: Author of A History of Magic.
Bane: One of the centaurs who lives in the Forbidden Forest.
Basilisk: Snake-like creature whose eyes will turn you to stone.
Beater: Quidditch player who tries to knock Bludgers towards the opposing team.
Beauxbatons Academy of Magic: School of witchcraft and wizardry somewhere in Europe.
Bell, Katie: Chaser on the Gryffindor Quidditch team.
Bertie Botts' Every Flavour Beans: Wizarding jellybeans that come in every flavour.
Bezoar: Stone taken from the stomach of a goat. It can counteract most poisons.
Binns, Professor: History of Magic teacher at Hogwarts and the only ghost teacher at the school.
Black Forest: Place in Germany where Professor Quirrel was rumoured to have encountered vampires.
Black, Regulus: Sirius’s younger brother who was killed by the Death Eaters.
Black, Sirius: Escaped prisoner from Azkaban and Harry’s godfather.
Blast-Ended Skrewt: Cross between a manticore and a fire crab. They have no recognisable head or eyes, but they explode intermittently at one end.
Blood-flavoured Lollipops: Lollipops for vampires.
Bloody Baron: Resident ghost of Slytherin Tower.
Bludgers: Black balls that try to knock players off their brooms in Quidditch.
Bode, Broderick: An employee in the Department of Mysteries in the Ministry of Magic.
Boggart: Shape-shifter that takes on the likeness of your worst fear.
Bones, Amelia Susan: Head of the Department of Magical Law Enforcement
Bones, Edgar: A member of the original Order of the Phoenix; brother of Amelia Bones.
Bones, Susan: A member of Dumbledore’s Army. Her aunt is Amelia Bones.
Borgin and Burkes: Dark Arts shop in Knockturn Alley.
Bouncing Bulb: A plant used in Herbology.
Bowtruckles: Magical creatures that appear to be made of bark or twigs.
Bozo: Photographer for the Daily Prophet.
Brown, Lavender: Hogwarts pupil in the same year as Harry. She is in Gryffindor House and her best friend is Parvati Patil.
Bryce, Frank: Muggle killed by Lord Voldemort. Frank worked as a gardener at the Riddle House in the village of Little Hangleton.
Buckbeak: A Hippogriff—a large flying creature that is half bird and half horse.
Bulstrode, Millicent: Hermione Granger's duelling partner in the second year duelling club.
Bubble-Head Charm: Magic that enables you to breathe underwater.
Bubotuber: Plant that resembles a black slug with swellings that contain a yellowish green liquid. Bubotuber pus is used to cure acne.
Burrow: The home of the Weasley family.
Butterbeer: Frothy, buttery drink served in Hogsmeade .

C

Cadogan, Sir: Knight from a portrait in the North Tower. Temporary guardian of Gryffindor Tower while the Fat Lady was being repaired.
Canary Creams: Trick custard-cream biscuits invented by Fred and George Weasley that turn the eater briefly into a canary.
Care of Magical Creatures: Class at Hogwarts that teaches students how to look after magical creatures.
Centaurs: Being that are half-man, half-horse and live in the Forbidden Forest.
Chamber of Secrets: A concealed room created by Salazar Slytherin where he sealed an unknown horror that could only be freed by his true heir to purge the school of Muggles.
Chang, Cho: Seeker of the Ravenclaw Quidditch team. Harry had a crush on her once.
Chaser: Quidditch player who tries to score using the Quaffle.
Chocoballs: Wizarding sweets full of strawberry mousse and clotted cream.
Chocolate Frogs: Wizard confectionery that contains collector's cards of famous witches and wizards.
Chudley Cannons: Ron Weasley's favourite professional Quidditch team. They wear bright orange and black robes.
Circe: A witch depicted on a wizard trading card.
Cleansweep 7: Type of broomstick used by Fred and George.
Clearwater, Penelope: Percy Weasley's girlfriend.
Cliodna: A witch depicted on a wizard trading card.
Cockroach Clusters: Wizarding sweets made from cockroaches.
Comet: Type of broomstick flown by Cho Chang.
Common Welsh Green: Type of dragon found in Britain.
Coote, Ritchie: Gryffindor’s newest Beater.
Cornish Pixies: Naughty little bright blue fairies that create havoc.
Crabbe, Vincent: One of Draco Malfoy's stupid friends. Thickset and mean, this Slytherin has a pudding-basin haircut and a very thick neck
Creevey, Colin: Admirer of Harry. He follows Harry constantly and is always taking his picture.
Creevey, Dennis: Younger brother of Colin Creevey. Dennis is three years below Harry in Gryffindor House.
Crouch, Bartemius: Head of the Department of International Magical Co-operation at the Ministry of Magic.
Crockford, Doris: A witch Harry meets in the Leaky Cauldron.
Crookshanks: Hermione’s pet cat. It is ginger with thick fur, a little bow-legged with a slightly crumpled face.
Crouch, Bartemius, Junior: Bartemius Crouch’s son. He was imprisoned in Azkaban as a follower of Voldemort.
Cruciatus Curse: Inflicts torture with the command Crucio. One of the three Unforgivable Curses.

D

Daily Prophet: The national wizarding newspaper,.
Dark Mark: The sign of the Death Eaters, it is a skull with a serpent in its mouth.
Davies, Roger: Captain of the Ravenclaw Quidditch team.
Dearborn, Caradoc: A member of the original Order of the Phoenix who disappeared while fighting Voldemort.
Death Eaters: Followers of Voldemort. The Dark Mark summons them.
Deathday Party: Celebration held by the ghosts at Hogwarts to commemorate the day they died.
Defence Against the Dark Arts: Magic lessons at Hogwarts that teach students how to defend themselves against evil creatures.
Deflating Draught Potion: It counteracts a swelling solution.
Delacour, Fleur: Pupil at Beauxbatons. Her grandmother was a Veela, which explains her great beauty and silvery blonde hair.
Delacour, Gabrielle: Fleur’s younger sister.
Delaney-Podmore, Sir Patrick: Leader of the Headless Hunt.
Dementor: These creatures employed as guards at Azkaban feeds on the happy emotions of humans. The Dementor’s kiss will suck out a human's soul.
Deletrius: Spell to make something disintegrate.
Dervish and Banges: Wizarding equipment shop in Hogsmeade.
Densaugeo: A spell that causes teeth to grow.
Diagon Alley: A long cobbled street filled with wizarding shops, which is accessible through the Leaky Cauldron pub in London.
Diffindo: A spell to make something split.
Diggle, Dedalus: A wizard Harry met in the Leaky Cauldron and a member of the revitalised Order of the Phoenix.
Diggory, Amos: Cedric’s father.
Diggory, Cedric: Seeker on the Hufflepuff Quidditch team.
Disapparate: To disappear at will.
Dissendium: Spell that opens entrance to secret passage to Hogsmeade. Disillusionment Charm: Works like an Invisibility Cloak, except instead of becoming invisible, you become the same colour as your surroundings.
Divination: Magical art of telling the future using tealeaves, crystal balls and so forth. Professor Trelawny is the Divination teacher at Hogwarts.
Dobby: Name of a house-elf who idolises Harry but gets him into lots of trouble.
Doge, Elphias: A member of the revitalised Order of the Phoenix. Dr Filibuster's Fabulous No-Heat Wet-Start Fireworks: Wizarding fireworks that fill the room with red and gold stars (lasts for about half an hour) and one of Fred and George’s favourite jokes.
Draco Dormiens Nunquam Titillandus: The Hogwarts motto that means, "Never tickle a sleeping dragon."
Dragon: Mythical reptilian creature who can fly and breathe fire. Hagrid is particularly fond of dragons and had a Norwegian Ridgeback called Norbert for a while.
Draught of Living Death: Powerful sleeping draught.
Drooble's Best Blowing Gum: Wizarding sweet. Fills the room with blue bubbles that last for half an hour.
Duelling Club: Club started by Professor Lockhart to teach students how to duel with spells.
Dumbledore, Albus: Headmaster of Hogwarts. Dumbledore is widely regarded as the finest wizard of his generation and was the only person that Voldemort was frightened of.
Dumbledore’s Army: A group of Hogwarts students to whom Harry teaches Defence Against the Dark Arts during his fifth year. Also known as the D.A.
Dungbomb: Stink bomb
Durmstrang Institute: School of witchcraft and wizardry somewhere in the far north of Europe. It is smaller than Hogwarts, but has more extensive grounds.
Dursley, Dudley: Harry's horrible cousin. Dudley is fat, blond and rather stupid. He tries to bully Harry whenever he can.

E

Edgecombe, Marietta: Cho Chang’s friend and a Ravenclaw. Marietta is a member of Dumbledore’s Army, but she also rats on the group to Professor Umbridge.
Eeylops Owl Emporium: Owl shop in Diagon Alley where Harry bought Hedwig.
Elixir of Life: Potion produced by the Philosopher’s Stone that will make the drinker immortal.
Enervate: A reviving spell.
Engorgio: A swelling charm.
Errol: Name of the Weasley family owl.
Evanesco: The incantation for a spell that makes something disappear.
Expecto patronum: Spell to guard against Dementors.
Expelliarmus: The incantation for the Disarming spell.
Exploding Bonbons: Wizarding sweets available from Honeydukes in Hogsmeade.
Exploding Snap: A card game.
Extendable Ears: Long flesh-coloured strings that allow the user to eavesdrop. Invented by Fred and George.

F

Fainting Fancies: Trick candies that cause you to faint. Useful if you want to get out of class. Invented by Fred and George.
Fang: Hagrid's boarhound.
Fat Friar, the: Resident ghost of Hufflepuff Tower.
Fat Lady: The subject of the portrait guarding the entrance to Gryffindor Tower.
Fawkes: Albus Dumbledore's pet phoenix.
Felix Felicis: A potion that provides its drinker with liquid luck.
Ferula: Spell to conjure a sling for a broken limb.
Fidelius Charm: A charm that conceals a secret within a person ( called the Secret-Keeper) so that no one will know about it unless the Secret-Keeper chooses to divulge it.
Figg, Arabella: Elderly Muggle who used to baby-sit Harry. She keeps cats.
Filch, Argus: Caretaker at Hogwarts; a squib. Filch hates students and especially does not like Harry or his friends. Filch has a cat called Mrs Norris.
Finch-Fletchley, Justin: Hogwarts pupil in the same year as Harry. Justin is in Hufflepuff House.
Finnigan, Seamus: Hogwarts pupil in the same year as Harry. Seamus is in Gryffindor House.
Firebolt: Fastest, most technologically advanced broomstick. Can accelerate from 0-150 miles per hour in 10 seconds.
Firenze: A centaur who lives in the Forbidden Forest.
Fizzing Whizbees: Wizarding sweets. Sherbet balls that make you levitate several feet in the air when you eat them.
Flamel, Nicholas: Albus Dumbledore's partner and the holder of the only known Philosopher’s Stone in existence.
Fletcher, Mundungus: A member of the Order of the Phoenix. Mrs Weasley doesn’t approve of him because he’s a thief.
Flint, Marcus: Captain of the Slytherin Quidditch team.
Flitwick, Professor: Charms teacher at Hogwarts. Tiny little wizard who has to stand on piles of books to see over his desk.
Flobberworm: Species of worm that Harry and his friends have to keep alive to pass the Care of Magical Creatures course in third year.
Floo powder: Glittering powder that wizards use for travelling. Throw it into the fireplace, say the name of your destination and step into the flames.
Florean Fortescue's Ice-Cream Parlour: Wizarding ice-cream shop on Diagon Alley.
Flourish and Blotts: Diagon Alley wizarding bookshop.
Flutterby Bush: Plant used in Herbology.
Foe-Glass: Magic mirror in which you can see your enemies.
Forbidden Forest: The dark woods surrounding the Hogwarts grounds. Students are not allowed to go there unless accompanied by a teacher.
Ford Anglia: Make of Mr Weasley's bewitched car.
Four-Point Spell: A spell that makes your wand function as a compass, with the incantation “Point Me”.
Freezing Charm: A spell that freezes the object to which it points.
Fudge Flies: Wizarding sweets.
Fudge, Cornelius: Minister of Magic.
Furnunculus: Curse that causes boils.

G

GalleonGold: Wizarding money.
Gaunt, Marvolo: Lord Voldemort’s grandfather.
Gaunt, Merope: Lord Voldemort’s mother.
Gaunt, Morfin: Lord Voldemort’s uncle.
Gambol and Japes: Wizarding joke shop on Diagon Alley.
Ghoul: Ghostly creature that lives in the attic and bangs on pipes. The Weasleys have one.
Giant: Giants can grow to a height of 20 feet and have a history of violence and warring among themselves. Many giants allied themselves with Voldemort and massacred Muggles during the first war. Others withdrew to remote mountain ranges. Their numbers are in decline.
Gillyweed: A water plant that helps you temporarily grow gills and fins if you eat it.
Gnomes: Very small creatures with leathery skin and large, bald heads, with horny feet and razor-sharp teeth. They live in holes in gardens and aren't very bright.
Goblet of Fire: Wooden cup full of flames, used as an impartial selector for the contenders in the Triwizard Tournament.
Goblins: Small creatures with swarthy faces, pointed beards and very long hands and feet. Goblins staff Gringotts Bank.
Gobstones: The wizarding version of marbles. The pieces squirt a stinky substance into other players' faces when they lose a point.
Godric's Hollow: Village where Harry's parents, Lily and James Potter, lived at the time of their deaths.
Golden Snitch: Small, golden ball with silver wings used in Quidditch. Must be caught by a Seeker to end the match.
Goshawk, Miranda: Author of The Standard Book of Spells.
Goyle, Gregory: One of Draco Malfoy's henchmen. He is thickset and mean with short, bristly hair and long, gorilla-like arms. Also in Slytherin house.
Granger, Hermione: Smart know-it-all at Hogwarts in Gryffindor house. She has bushy, brown hair, large front teeth and a loud, rather bossy voice. Hermione works very hard and always gets the best marks in her exams.
Grawp: Hagrid’s half-brother—he is a full giant.
Great Hall The main hall in Hogwarts where Sorting takes place and where meals are served and meetings take place. The ceiling is bewitched to look like the sky outside.
Gregory the Smarmy: Statue at Hogwarts.
Grey Lady: Resident ghost of Ravenclaw Tower.
Greyback, Fenrir: A dangerous werewolf who tries to bite and contaminate as many people as possible.
Grim: A giant black dog taken to be a death omen.
Grindylow: A green water demon with sharp horns and very long fingers.
Gringotts: The wizard bank in London, with vaults far below the streets, run by goblins.
Griphook: Goblin at Gringotts Bank.
Grubbly-Plank, Professor: An elderly witch who took over as substitute teacher of Care of Magical Creatures when Hagrid was indisposed.
Grunnings: Firm, a firm that makes drills, where Harry's uncle Vernon Dursley is a director.
Grunnion, Alberic: Name of a wizard depicted on a wizard trading card.
Gryffindor House: One of the four houses in Hogwarts. Harry, Hermione Granger and the Weasleys are all in Gryffindor house. Godric Gryffindor founded it and the Gryffindor symbol is a lion.
Gryffindor, Godric: One of the four founders of Hogwarts. Gryffindor House was named after him.

H

Hagrid, Rubeus: Keeper of Keys and Grounds and teacher of Care of Magical Creatures class at Hogwarts from Harry's third year. He was a student at Hogwarts but was expelled for unknown reasons. Professor Dumbledore allowed Hagrid to stay as gamekeeper. Hagrid is almost twice a tall as any other person and has a liking for strange and dangerous creatures—especially dragons.
Hand of Glory: Withered hand that gives light to the person holding it when a candle is placed in its grip.
He-Who-Must-Not Be-Named: The evil Lord Voldemort. Also referred to as You-Know-Who.
Headless Hunt: Team of ghosts whose heads have been completely cut off. Activities include Horseback Head-Juggling and Head Polo. Nearly Headless Nick wants to join the hunt, but can't because his head has not been completely severed.
Hebridean Black: A breed of wild dragon found in Britain.
Hedwig: Harry's owl and mail courier.
Heir of Slytherin: True heir to Salazar Slytherin who can open the Chamber of Secrets to release the horror within.
Hengist of Woodcroft: A wizard depicted on a wizard trading card.
Herbology: Study of plants. Professor Sprout is the Herbology teacher at Hogwarts.
Hermes: Name of Percy Weasley's owl.
Higgs, Terence: Seeker on the Slytherin Quidditch team in Harry's first year.
Hinkypunk: Small creatures that live in bogs and swamps, they wander about at night with a lantern to lure lost travellers into the swamps.
Hippogriff: Magical creature that has the front legs, wings and head of an eagle, and the body, hind legs and tail of a horse.
Hit Wizards: Wizard police from the Magical Law Enforcement Squad who are specially trained to deal with powerful criminals.
Hog's Head: The less reputable pub in Hogsmeade.
Hogsmeade: The only completely magical village in Britain. Hogsmeade is not far from Hogwarts.
Hogwarts: School of Witchcraft and Wizardry. Hogwarts is located in a secret location somewhere in the north of Britain. The four greatest witches and wizards of the age founded Hogwarts more than a thousand years ago: Godric Gryffindor, Helga Hufflepuff, Rowena Ravenclaw and Salazar Slytherin. They built a remote castle, far away so that witches and wizards could train in safety. Pupils attend from age 11 for seven years of rigorous training in the art of witchcraft and wizardry.
Honeydukes: Wizarding sweet shop in Hogsmeade.
Hooch, Madam: Broomstick and flying teacher at Hogwarts.
Hopkirk, Malfalda: An employee in the Improper Use of Magic Office
Horcrux: An object in which a person has concealed part of their soul.
House Cup: Trophy awarded to the Hogwarts house with the most points at the end of the year.
House-elf: Small creature that works as a servant in some wizarding houses. A house-elf can only be set free when its master gives the elf a piece of clothing.
Howler: Wizarding letter which, when opened, shrieks and howls at the reader. Comes in a red envelope and is usually sent by someone who is very angry.
Hufflepuff House: One of the four houses in Hogwarts. Helga Hufflepuff founded it and the Hufflepuff symbol is a badger. The resident ghost is the Fat Friar.
Hufflepuff, Helga: One of the four founders of Hogwarts. Hufflepuff house is named after her.

I

Ice Mice: Wizarding sweets available from Honeydukes in Hogsmeade. Make your teeth squeak and chatter.
Impediment Jinx: Spell to slow down and obstruct attackers. The incantation is “Impedimenta ”.
Imperius Curse: Spell to control another person completely, using the incantation “Imperio”. One of the three Unforgivable Curses. It can be resisted only with great mental effort.
Incarcerous: The incantation for a spell that causes ropes to appear in midair and wrap around something completely.
Incendio: Fire-lighting spell.
Inferius: A dead body that has been bewitched to do a Dark wizard’s bidding. Its plural is inferi.
Inquisitorial Squad: A select group of students who are supportive of the Ministry of Magic, handpicked by Professor Umbridge. Malfoy is the leader.
Intruder Charm: A spell that is used to tell when someone is breaking in.
Invisibility Cloak: Magic cloak that makes the wearer invisibility.

K

Kappa: Monkey-like creature that lives in water and strangles people who invade its territory.
Karkaroff, Igor: Headmaster of the Durmstrang Institute. Knows a lot about the Dark Arts.
Keeper: Quidditch player who guards the goalposts.
Kettleburn, Professor: Care of Magical Creatures teacher at Hogwarts. Retired at the end of Harry's second year, to enjoy more time with his remaining limbs.
King's Cross Station: The station in London where the Hogwarts Express leaves from Platform Nine and Three-Quarters.
Knight Bus, the: Emergency bus that transports witches and wizards to any destination.
Knockturn Alley: Street of wizard shops devoted totally to the Dark Arts.
Knut: Bronze wizarding money. There are 29 Knuts to a Sickle.
Kreacher: The Black family house-elf.
Krum, Viktor: Seeker for the Bulgarian national Quidditch team. Pupil at the Durmstrang Institute.
Kwikspell: Correspondence course in beginner's magic for squibs (magicians who have little magical powers).

L

Leaky Cauldron: The wizarding pub and boarding house through which witches and wizards gain access to Diagon Alley.
Leprechaun: An Irish elf or pixie that is small and can fly.
Lestrange, Bellatrix: A Death Eater, she is sister to Andromeda Tonks and Narcissa Malfoy. She was imprisoned in Azkaban for 16 years.
Lestrange, Rabastan: Death Eater who was imprisoned in Azkaban for 16 years.
Lestrange, Rodolphus: Bellatrix’s husband. He was also a Death Eater and was imprisoned in Azkaban for 16 years.
Levicorpus: A spell that dangles your opponent upside-down in the air by the ankle.
Liberacorpus: A spell that counter “Levicorpus”.
Lockhart, Gilderoy: Teacher of Defence Against the Dark Arts in Harry's second year. He has written several self-glorifying autobiographies.
Longbottom, Alice: Neville Longbottom’s mother and a member of the original Order of the Phoenix. She was tortured into insanity by the Death Eaters and now lives in St Mungo’s Hospital of Magical Maladies and Injuries.
Longbottom, Frank: Neville Longbottom’s father and a member of the original Order of the Phoenix. He was tortured into insanity by the Death Eaters and now lives in St. Mungo’s Hospital of Magical Maladies and Injuries.
Longbottom, Neville: Harry’s friend. He is forgetful and rather clumsy. He comes from a magical family, but was a late starter. He is in Gryffindor House, in Harry's year.
Lovegood, Luna: A student at Hogwarts in the same year as Ginny. One of the odd-balls of Hogwarts, Luna is a Ravenclaw and a member of the Dumbledore’s Army. Her father is the editor of The Quibbler.
Lumos: A spell that makes a small bal of light appear on the end of your wand.
Lynch, Aidan: Seeker for the Irish national Quidditch team.

M

Macmillan, Ernie: Hogwarts pupil in the same year as Harry, in the Hufflepuff House.
Macnair, Walden: Executioner for the Ministry of Magic. A former Death Eater.
Madam Malkin's: Shop in Diagon Alley that sells wizarding robes for all occasions.
Magical Law Enforcement Squad: Wizard police or Hit Wizards who are specially trained to deal with powerful criminals.
Magical Menagerie: Wizarding pet shop in Diagon Alley.
Malfoy, Abraxas: Draco Malfoy’s grandfather.
Malfoy, Draco: A thin boy with white-blonde hair, a pointed face and a perpetual sneer, he is Harry's archenemy at Hogwarts. Malfoy believes he is superior to Harry and hates Harry and all his friends. He is in the Slytherin house.
Malfoy, Lucius: Draco Malfoy's father and a Death Eater.
Malfoy, Narcissa: Mother of Draco and wife of Lucius Malfoy.
Mandragora: Another word for Mandrake.
Mandrake: A powerful restorative used to return cursed or transfigured people to their natural state. The cry of the Mandrake is fatal to anyone who hears it.
Marauder's Map: A map that shows all the secret passageways and the whereabouts of everyone in Hogwarts.
Maxime, Olympe: Head of Beauxbatons Academy. Because of her size, Madame Maxime is believed to be half giant.
McGonagall, Professor Minerva: Deputy Headmistress of Hogwarts. She is Head of Gryffindor House and the Transfiguration teacher.
McKinnon, Marlene: A member of the original Order of the Phoenix. Killed by Death Eaters.
McLaggen, Cormac: A student who is part of the “Slug Club” and temporarily replaces Ron as Keeper.
Meliflua, Araminta: Cousin of Sirius Black’s mother.
Merlin: Name of a wizard depicted on a wizard trading card.
Merpeople: Underwater dwellers who build cities at the bottom of lakes. They have fishtails, green hair , and grey skin. Voices are unintelligible above water, unless one speaks Mermish.
Metamorphmagu: One who can change his or her appearance at will.
Metamorph Medals: Medals that when worn around the neck gives the wearer the ability to change their appearances at will.
Midgeon, Eloise: Hogwarts pupil who accidentally removed her nose when trying to cure her acne.
Mimbulus Mimbletonia: A plant that Neville gets for his birthday. Has an amazing defence mechanism—it shoots dark green liquid when poked.
Mimsy-Porpington, Sir Nicholas de: Resident ghost of Gryffindor Tower. Also known as Nearly Headless Nick.
Ministry of Magic: Government agency that tries to regulate and keep the activities of witches and wizards secret from non-magical people.
Mirror of Erised: Magical mirror that shows the onlooker their heart's desire.
Moaning Myrtle: A ghost at Hogwarts who hides in a girls' toilet.
Mobilarbus: A spell to move objects.
Mobilicorpus: A spell to move someone who can't walk.
Monkshood: Plant used in potions. Also known as aconite or wolfsbane.
Monster Book of Monsters: Large green book of monsters that is required reading for third years. It must be stroked down the spine or it will bite your fingers.
Moody, Alastor: Retired Auror hired to teach Defence Against the Dark Arts in Harry's fourth year. Known as Mad-Eye Moody since he lost an eye in the fight against Voldemort and his supporters, and replaced it with a magical eye. A member of the Order of the Phoenix.
Moony: Professor Lupin's nickname at Hogwarts.
Morgana: A witch depicted on a wizard trading card
Morsmordre: Spell to conjure the Dark Mark.
Mostafa, Hassan: Chairwizard of the International Association of Quidditch. He is Egyptian.
Mudblood: Term used to describe a person of non-magic parentage. Considered a great insult.
Muffliato: A spell that fills the ears of anyone nearby with an unidentifiable buzzing. Particularly useful for talking in class.
Muggle: A person without magical powers. Muggles live in ignorance of the world of wizards and witches.
Muggle Studies: Class taken by wizarding folk to study non-magical people.

N

Nagini: A very large, venomous female snake kept by Voldemort.
N.E.W.Ts: Nastily Exhausting Wizarding Tests. Higher-level examinations at Hogwarts.
Nearly Headless Nick: Resident ghost of Gryffindor Tower. So called because his beheading was not completely successful. Full name is Sir Nicholas de Mimsy-Porpington.
Niffler: Magical creature that can find buried treasure. Nifflers are black and fluffy with long snouts and spadelike feet.
Nigellus, Phineas: Former headmaster of Hogwarts and Sirius’s great-great-grandfather.
Nimbus 2000: Type of broomstick. It was Harry's first broomstick.
Nimbus 2001: The successor to the Nimbus 2000 broomstick.
Norbert: Name of Hagrid's Norwegian Ridgeback dragon.
Norris, Mrs: Name of Filch's cat. She is a scrawny-looking, dust-coloured cat with bulging eyes.
Norwegian Ridgeback: A very rare breed of dragon. Hagrid had one as a pet for a while.
Nosebleed Nougat: Trick candies that cause your nose to bleed continually. Invented by Fred and George.
Nox: Spell to extinguish the light from your wand.
Number Twelve Grimmauld Place: The Black family house in London; headquarters of the revitalised Order of the Phoenix.

O

O.W.Ls: Ordinary Wizarding Levels. The standard-level examinations at Hogwarts.
Obliviate: Memory spell that makes the subject forget a piece of information.
Obliviator: Member of an Accidental Magic Reversal Squad. They work for the Improper Use of Magic Office.
Occlumency: The magical defence of the mind against external penetration. An obscure branch of magic, but a highly useful one. Harry takes Occlumency lessons from Snape.
Ollivanders: Diagon Alley wand shop. 'Makers of Fine Wands since 382 B.C.'
Omnioculars: Binoculars with slow-motion and replay settings.
Oppugno: A spell that makes magical birds attack.
Order of the Phoenix: A secret society founded by Dumbledore dedicated to fighting against Lord Voldemort. Its first incarnation ended with Voldemort’s attempt to kill Harry when he was a baby, and the wizard’s subsequent downfall. Dumbledore revived it after Harry’s fourth year to fight the rejuvenated Dark Lord and Death Eaters.

P

Padfoot: Sirius Black's nickname at Hogwarts.
Paracelsus: A wizard depicted on a wizard trading card . His real name was Theophrastus Bombastus von Hohenheim.
Parkinson, Pansy: Hogwarts pupil in the same year as Harry, in Slytherin House. She has a pug-like face, and becomes a prefect in their fifth year.
Parselmouth: Wizard who can talk to snakes—a very rare trait often thought to be the sign of a Dark wizard.
Parseltongue: Language spoken by a Parselmouth
Patil, Padma: Hogwarts pupil in the same year as Harry, in Ravenclaw House. Twin sister of Parvati Patil.
Patil, Parvati: Hogwarts pupil in the same year as Harry, in Gryffindor House. Twin sister of Padma Patil and best friend of Lavender Brown.
Patronus: Positive force which acts as protection from a Dementor. It is conjured up by the incantation “Expecto patronum”.
Peaks, Jimmy: Gryffindor’s newest Beater.
Peeves: Hogwarts' resident poltergeist. Tries to get students in trouble and loves causing havoc at any opportunity.
Pensieve: It looks like a stone basin with silvery liquid and stores thoughts and memories.
Pepper Imps: Wizarding sweets available from Honeydukes in Hogsmeade. Makes you smoke at the mouth.
Peppermint Toads: Toad-shaped peppermint sweets that hop about in the stomach after they are eaten.
Pepper-Up Potion: Magical restorative.
Peruvian Instant Darkness Powder: A powder sold at Weasleys’ Wizard Wheezes. Imported from Peru, it casts an instant darkness around everyone but the user.
Petrificus Totalus: Spell to bind arms and legs together.
Pettigrew, Peter: Friend of James Potter, Harry's father, while at Hogwarts. His nickname was Wormtail.
Philosopher’s Stone: A legendary stone that transform any metal into pure gold. It also produces the Elixir of Life, which will make the drinker immortal. The only known stone belongs to Nicholas Flamel, Albus Dumbledore's former alchemy partner.
Phoenix: Rare bird that bursts into flames and rises from its ashes. Their tears can heal wounds. Albus Dumbledore has a pet phoenix, Fawkes.
Pince, Madam: Librarian at Hogwarts.
Pigwidgeon: Name of a young grey owl belonging to Ron Weasley. Often called Pig for short.
Platform nine and three-quarters: The platform at King's Cross Station where students gather to board the Hogwarts Express.
Pocket Sneakoscope: A spinning glass top that lights up when there is somebody or something suspicious around.
Podmore, Sturgis: A member of the revitalised Order of the Phoenix.
Polyjuice Potion: Potion that will allow the drinker to take on the appearance of another person for one hour.
Pomfrey, Madam Poppy: Matron at Hogwarts.
Portkey: Object that transports wizards to a prearranged place. As soon as you touch the Portkey, you are whisked to the destination. Any object can be turned into a Portkey.
Potions: Class at Hogwarts to learn how to brew magical potions. Professor Snape is Potions master at Hogwarts.
Potter, Harry: Student at Hogwarts. Famous for having survived an attack by Lord Voldemort in infancy.
Potter, James: Harry's father.
Potter, Lily: Harry's mother, born to Muggles. Lily is the sister of Petunia Dursley, who is most un-wizardly.
Prang, Ernie: Driver of the Knight Bus.
Prewett, Fabian: A member of the original Order of the Phoenix; brother to Gideon; killed by the Death Eaters.
Prewett, Gideon: A member of the original Order of the Phoenix and brother to Fabian. The Death Eaters killed him.
Prior Incantato: Incantation that reveals the most recent spell or spells a wand has performed.
Privet Drive: The street where Harry lives with the Dursleys.
Prongs: James Potter's nickname at Hogwarts.
Protean Charm: A spell Hermione uses to bewitch coins to inform Dumbledore’s Army members of the time and date of their next meeting.
Ptolemy: A wizard depicted on a wizard trading card.
Puking Pastilles: Trick candy that causes you to vomit uncontrollably. Invented by Fred and George.
Pumpkin juice: Wizarding drink.
Pumpkin pasty: Wizarding food.
Put-Outer: Device resembling cigarette lighter, used to turn street-lamps on and off. Used by Albus Dumbledore.
Pygmy Puffs Miniature Puffskeins. Fred and George breed and sell them in their joke shop.

R

Ravenclaw House: One of the four school houses in Hogwarts, founded by Rowena Ravenclaw. The Ravenclaw symbol is an eagle. The resident ghost is the Grey Lady.
Ravenclaw, Rowena: One of the four founders of Hogwarts. Ravenclaw House was named after her.
Red Cap: Goblin-like creature found in places where bloodshed has occurred. They lie in wait to bludgeon the lost.
Reducio: A shrinking charm.
Reductor curse: A curse that blasts apart a solid object. The incantation is “Reducto!”
Relashio: Spell to make someone let go of something.
Remembrall: Magical glass ball, the size of a large marble, filled with white smoke. The smoke turns red to tell you that there is something you have forgotten to do.
Reparo: Repairing charm.
Rictusempra: Tickling spell.
Riddickulus: Spell to make a Boggart take on another appearance.
Riddle House: Deserted former home of Voldemort's father, in the village of Little Hangleton.
Riddle, Tom Marvolo: The young Lord Voldemort, who attended Hogwarts.
Ripper: Aunt Marge's dog.
Robbins, Demelza: Chaser on the Gryffindor Quidditch team.
Ronan: Name of a centaur in the Forbidden Forest.
Room of Requirement: A room that a person can only enter when he or she has real need of it. When it appears it is always equipped for the seeker’s needs.
Rosmerta, Madam: Publican of the Three Broomsticks pub in Hogsmeade.

S

Scabbers: Ron's pet rat. He once belonged to Ron's older brother Percy.
Scrimgeour, Rufus: The Minister of Magic who takes over from Cornelius Fudge.
Scamader, Newt: Author of Fantastic Beasts and Where to Find Them.
Scourgify: The incantation for the Vanishing Spell.
Secrecy Sensor: Antenna that vibrates when it detects concealment and lies.
Sectumsempra: A curse that slashes its victim open as a sword would.
Seeker: Quidditch player who tries to catch the Golden Snitch.
Self-shuffling Playing Cards: Wizarding playing cards that shuffle themselves.
Shacklebolt, Kingsley: A member of the revitalised Order of the Phoenix.
Shield Charm: Casts a temporary invisible wall around you to deflect minor curses.
Shrieking Shack: Situated in the town of Hogsmeade, it is supposed to be the most haunted building in Britain.
Shunpike, Stan: Conductor on the Knight Bus.
Sickle: Silver wizarding money. There are 17 sickles in one galleon.
Silencio: The incantation for the Silencing Charm.
Sinistra, Professor: Teacher of Astronomy at Hogwarts.
Skeeter, Rita: A nosy and malicious journalist.
Skele-Gro: Potion used to re-grow bones after they have been removed.
Skiving Snackboxes: Joke “treats” created by Fred and George Weasley. Students take one to get sick and out of class, and then another to eliminate the effects of the first.
Sleekeazy's Hair Potion: Tames bushy hair.
Slinkhard, Wilbert: Author of Defensive Magical Theory.
Slug Club: Horace Slughorn’s hand picked club of chosen students who have great magical talent or connections with famous people.
Slughorn, Horace: Professor at Hogwarts. Was once the Head of Slytherin.
Slytherin House: One of the school houses in Hogwarts. Founded by Salazar Slytherin. The Slytherin symbol is a snake.
Slytherin, Salazar: One of the four founders of Hogwarts. Slytherin house is named after him. Created the Chamber of Secrets.
Smeltings: Dudley Dursley's private school. Uncle Vernon also attended it.
Snape, Severus: Potions master at Hogwarts and the Head of Slytherin house.
Snape, Tobias: Severus Snape’s father.
Sneakoscope: Glass spinning top that lights up and spins when there is someone untrustworthy around.
Society for the Promotion of Elfish Welfare (S.P.E.W): Activist group organised by Hermione in her fourth year at Hogwarts.
Sonorus: A charm to magnify one's voice.
Sorting Hat: The hat that decides which House students shall be in while at Hogwarts.
Specialis Revelio: A spell used to reveal any bewitching or hexings on an object.
Spellotape: Wizarding repair tape. It was used by Ron Weasley to mend his broken wand.
Spinner’s End: A street in an unidentified town where Severus Snape has a house.
Spinnet, Alicia: One of the Chasers on the Gryffindor Quidditch team. She is two years above Harry at Hogwarts.
Splinching: Injury caused by careless Apparating where a part of the Apparating person's body is left behind.
Spore, Phyllida: Author of One Thousand Magical Herbs.
Sprout, Professor: Herbology professor at Hogwarts.
Squib: Someone born without magical powers in a magical family.
Stinksap: Green liquid that shoots from a Mimbulus Mimbletonia. It’s green and smells like rancid manure.
Stupefy: Stunning spell.
Swelling Solution: Potion that causes body parts to swell to enormous proportions.
Switch, Emeric: Author of A Beginner's Guide to Transfiguration.

T

Tarantallegra: Dancing spell.
Tergeo: A spell that siphons off liquid.
The Quibbler: A tabloid newspaper in the Wizard world, edited by Luna Lovegood’s father.
Thestrals: Fleshless winged horses that pull the carriages to Hogwarts. They can only been seen by people who have witnessed death.
Thomas, Dean: Hogwarts pupil in the same year as Harry, in Gryffindor house.
Three Broomsticks: The pub in Hogsmeade.
Time-Turner: An hourglass that allows the wearer to travel back in time.
Ton-Tongue Toffee: Trick candy invented by Fred and George Weasley that causes the tongue to swell enormously.
Tonks, Andromeda: Nymphadora Tonks’s mother.
Tonks, Nymphadora: A member of the revitalised Order of the Phoenix. A metamorphmagus.
Tonks, Ted: Nymphadora Tonks’s father.
Toothflossing Stringmints: Wizarding sweets that floss your teeth while you suck them.
Transfiguration: The art of turning one thing into another.
Transfiguration Today: Specialist wizarding magazine about Transfiguration.
Trelawny, Professor Sybill: Divination teacher at Hogwarts who loves to predict student deaths every year at Hogwarts. But she has only made two real predictions in her life.
Trevor: Neville Longbottom's pet toad.
Trimble, Quentin: Author of The Dark Forces: A Guide to Self-Protection.
Triwizard Tournament: Competition between the three largest European schools of witchcraft and wizardry: Hogwarts, Beauxbatons and Durmstrang. Each school selects a champion, and the champions compete in three magical tasks.
Trueblood: Someone born to pure magical parents.
Twycross, Wilkie: The Apparition instructor from the Ministry of Magic.

V

Vablatsky, Cassandra: Author of Unfogging the Future, a guide to basic fortune-telling.
Vampire: A creature that roams the night feeding on the blood of living beings.
Vance, Emmeline: A member of the revitalised Order of the Phoenix.
Vane, Romilda: A girl at Hogwarts who has a crush on Harry.
Vector, Professor: Arithmancy teacher at Hogwarts.
Veela: Beautiful women with white-gold hair. They hypnotically fascinate men—at least until the Veelas get angry and they grow beaks and scaly wings.
Venomous Tentacula: A magical plant.
Veritaserum: A powerful truth potion. The Ministry of Magic restricts its use.
Vindictus, Viridian: Author of Curse and Countercurse.
Violet: A wizened witch, who lives in a painting next to the Great Hall in Hogwarts, and a good friend of the Fat Lady.
Voldemort, Lord: Evil wizard greatly feared by the wizarding community. His dark reputation is such that most wizards will only refer to him as He-Who-Must Not-Be-Named or You-Know-Who. He disappeared after killing James and Lily Potter, Harry’s parents, leaving Harry an orphan with a lightning scar on his forehead.

W

Waffling, Adalbert: Author of Magical Theory.
Wand: Implement used by wizards for magic.
Weasley, Arthur: Ron Weasley's father and Head of the Misuse of Muggle Artifacts Office at the Ministry of Magic.
Weasley, Bill: Ron Weasley's brother who works for the Gringotts Bank.
Weasley, Charlie: Ron Weasley's brother who studies dragons in Romania.
Weasley, Fred: Ron’s older brother and two years ahead of him at Hogwarts. He is twin to George and in the Gryffindor House.
Weasley, George: Ron’s older brother and two years ahead of him at Hogwarts. He is twin to Fred and in the Gryffindor House.
Weasley, Ginny: Ron Weasley's younger sister who idolises Harry. She is one year below Harry and Ron and in the Gryffindor House, too. She goes on to become Harry’s girl friend.
Weasley, Molly: Ron’s mother.
Weasley, Percy: Ron's older brother by four years. A prefect at Hogwarts who goes on to work at the Ministry of Magic, he thinks he is grown-up and important.
Weasley, Ron: Harry's best friend at Hogwarts. He has a pet rat called Scabbers and is in the Gryffindor House.
Weasleys’ Wizard Wheezes: Fred and George’s joke shop in Diagon Alley.
Weird Sisters: A popular music group.
Werewolf: Half-man, half-wolf. These creatures will kill given the chance, and their bite, if it is not fatal, will turn the victim into a werewolf, too.
Whomping Willow: Large tree in the grounds of Hogwarts that hits anything that comes too close.
Wingardium Leviosa: Spell to make things fly.
Winky: A house-elf who lives at Hogwarts, formerly in the employ of the Crouch family.
Wizengamot: The Wizard high court
Witherwings: Buckbeak’s code name after he returns to Hargrid’s care again.
Wolfsbane: Plant used in potions. Also known as monkshood or aconite.
Wood, Oliver: Captain and Keeper of the Gryffindor Quidditch team until leaving school at the end of Harry's third year.
Wormtail: Nickname of Peter Pettigrew.
WWN: The Wizarding Wireless Network.