G

Galleon ~ A gold coin (=17 Sickles). About £1.64 or $1.00 [1,5]

Gambol and Japes ~ Wizarding Joke Shop in Diagon Alley. [2,4]

Marvolo Gaunt ~ Direct descendant of Slytherin, grandfather of Tom Riddle. [6,10]

Morfin Gaunt - Parsel-mouthed son of Marvolo Gaunt. [6,10]

Merope Gaunt ~ Tom Riddle's mother; daughter of Marvolo Gaunt. [6,10]

Gernumbli Gardensi ~ Garden Gnomes []

Giant ~ A large, violent race, unpopular in the wizarding world; "They're ... not very nice", according to Ron Weasley. [4,23]

Gillyweed ~ Enables a person wizard to breathe underwater. [4,26]

Gladrags Wizardwear ~ Store in Hogsmeade. [4,27]

Gnome ~ A garden pest, small and leathery-looking, with a large knobbly bald head. [2,3]

Gobbledegook ~ The language of Goblins. [4,7]

Goblin ~ A magical being; they run Gringott's, for example. [1,5]

Golgomath~ Gurg for a while. [5,20]

Golpalott's Third Law ~ The antidote for a blended poison will be equal to more than thhe sum of the antidotes for each of the separate components. [6,18]

Dragomir Gorgovitch ~ Quidditch chaser, transferred to the Chudley Cannons for a record fee. Record holder for the most drops in a season. [7,7]

Miranda Goshawk ~ Author of The Standard Book of Spells (Grades 1-4). [1,5]

Goblet of Fire ~ You'll have to read the book!

Gregory Goyle ~ Thickset and mean, one of Draco Malfoy's Slytherin sidekicks. [1,6]

Goyle ~ Death Eater; father of Gregory (Slytherin student and friend of Malfoy). [4,33]

Hermione Granger ~ Muggle-born student at Hogwarts; a student in Gryffindor, and a good friend of Harry and Ron. [1,6] Her birthday is 19 September [jkrowling.com]; full name Hermione Jean Granger [7,7]

Grawp ~ A giant, Hagrid's half-brother. [5,30]

Gregorovitch ~ Wandmaker. [7,7]

Fenrir Greyback ~ Werewolf and supporter of Lord Voldemort. [6,2]

The Grim ~ A giant spectral dog that haunts churchyards; an omen of death. [3,6]

Grindelwald ~ Wizard; one time friend of Albus Dumbledore, later took an anti-muggle position. [7,2]

Grindlewald's Mark ~ Sign utilized by supporters of Grindlewald. [7,8]

Grindylow ~ A small, horned, water demon. [3,8]

Gringott's ~ The wizards' bank, based under London. [1,5]

Griphook ~ A helpful goblin at Gringotts. [1,5]

Professor Wilhelmina Grubbly-Plank ~ Temporary care of magical creatures teacher. [4,24] Gryffindor ~ One of the four houses at Hogwarts. [1,6] Godric Gryffindor, one of the four founders of Hogwarts. [1,6] Gurdyroot ~ Excellent for warding off gulping plimpies, Luna assures us. [6,20]

Gurg ~ The title of the chief of the Giants. [5,20]