Harry Potter Alphabet

Alohomora	Door-unlocking spell.
Butterbeer	Frothy, buttery drink served in Hogsmeade.
Cruciatus Curse	Inflicts torture with the command Crucio. One of the three Unforgivable Curses.
Death Eaters	Followers of Voldemort. They are summoned by the Dark Mark.
Dark Mark, the	Sign of the Death Eaters: a skull with a serpent in its mouth.
Extendable Ears	Long flesh-colored strings that allow the user to eavesdrop on conversations from a distance. Invented by Fred and George.
Felix Felicis	A potion that provides its drinker with liquid luck.
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. Harry's next best friend after Ron Weasley. Her parents are Muggle dentists.
Golden Snitch	Small, golden ball with silver wings used in Quidditch. Must be caught by a Seeker to end the match.
Horcrux	An Object in which a person has concealed part of their soul.
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.
Jelly-Legs Jinx	Makes your adversary's legs wobbly.
Knight Bus, the	Emergency bus that transports witches and wizards to any destination.
Lumos	Spell to light your wand.
Marauder's Map	A map that shows all the secret passageways and the whereabouts of everyone in Hogwarts. Harry and Ron use it to get to Hogsmeade.
Nimbus 2000	Type of broomstick. Harry's first broomstick.
Omnioculars	Binoculars with slow-motion and replay settings.
Patronus	Positive force which acts as protection from a Dementor. It is conjured up by the incantation “Expecto patronum”.
Quick-Quotes Quill	Pen that writes tabloid journalism by itself.
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. Also known to the house-elves as the Come and Go Room.
Skele-Gro	Potion used to re-grow bones after they have been removed.
Sorting Hat	The hat that decides which House students shall be in while at Hogwarts.
Time-Turner	Hourglass that allows the wearer to travel back in time.
Unbreakable Vow Veritaserum	A magical vow that requires the person who takes it to complete the avowed mission or die. Powerful Truth Potion.
Wingardium Leviosa	Spell to make things fly.

Xenophilius "Xeno" Lovegood                   was the editor of The Quibblermagazine, the husband of Mrs. Lovegood, and the father of Luna Lovegood. He believed in the existence of the Deathly Hallows and supported Harry in The Quibbler when few others would.

You-Know-Who	The evil Lord Voldemort, a Dark wizard who killed Harry's parents. Also referred to as He-Who-Must-Not-Be-Named.
Zonko's	Wizard joke shop in Hogsmeade.