M

Walden Macnair ~ Executioner for the Committee for the Disposal of Dangerous Creatures. [3,16]

Magorian ~ A centaur. [5,30]

Draco Malfoy ~ Unpleasant Slytherin youth in Harry's year - believes in the exclusivity of 'pure blood' families. [1,6]

Lucius Malfoy ~ Father of Draco, and once a loyal supporter of You-Know-Who. [2,3]

Narcissa (Cissy) Malfoy ~ Draco's mother. [4,8]

Madam Malkin ~ Robes for All Occasions, in Diagon Alley. [1,5]

Mandrake [mandragora] ~ A powerful restorative, used for people who have been transfigured or cursed; its cry is fatal to all who hear it. [2,6]

Marauder's Map ~ Details of Hogwarts castle and grounds, plus the positions of people, and routes to Hogsmeade. [3,10]

Griselda Marchbanks ~ Head of the Wizarding Examinations Authority. [5,31]

Madame Olympe Maxime ~ Principle of Beauxbatons Academy. [4,15]

Cormac McLaggen ~ Large selfish Gryffindor student. [6,7]

Professor Minerva McGonagall ~ Witch, Head of Gryffindor House at Hogwarts, Teacher of Transfiguration [1,1]

McKinnon ~ Wizarding family that had been attacked during Voldemort's reign of terror. [1,4]

Mediwizard ~ One trained and prepared to provide appropriate first aid, at Quidditch, for example. [4,8]

Mercus ~ Mer-chieftainess in the Hogwarts lake. [4,26]

Mermish ~ The language of the Merpeople. [4,7]

Merpeople ~ Underwater race, not particularly friendly to wizards. [4,25]

Galatea Merrythought ~ Professor for Defense Against The Dark Arts in Professor Dippet's days. [6,17]

Metamorphmagus ~ One with the ability to change appearance at will. [5,3]

Millamant's Magic Marquees ~ Suppliers of wizardly tents. [7,6]

Ministry of Magic ~ Its main job is to keep muggles unaware of the continuing existence of witches and wizards. [1,5]

Misuse of Muggle Artifacts Office ~ Mr Weasley's department at the Ministry of magic. [2,3]

Mobiliarbus ~ A charm to move objects, such as Christmas trees. [3,10]

Mobilicorpus ~ A spell to move a body. [3,19]

Mokeskin ~ Useful for making pouches that no-one but the owner can extract the contents; the scaly material contracts at the approach of strangers, amking the pouch hard to find. [7,7] A moke is a kind of lizard that also contacts at will - Fantastic Beasts & Where To Find Them.

The Monster Book of Monsters ~ Quite literally. [3,1]

Professor Alastor "Mad-Eye" Moody ~ Retired Auror, reputated to have filled half the cells in Azkaban. [4,11]

Moony ~ A nickname of Remus Lupin, one of the authors of the Marauder's Map. [3,10]

Morsmordre ~ Incantation to conjur the Dark Mark, emblem of You-Know-Who's supporters. [4,9]

Mosag ~ Wife of Aragog. [2,15]

Mudblood ~ Foul name for somone Muggle-born. [2,7]

Muffliato ~ A spell that fills the ears of anyone nearby, to protect secret conversation. [6,12]

Muggle ~ Non-magic folk; may marry into wizardry - or be parents to wizards. Hermione Granger, for example, is 'muggle born'.[1,1]

Muggle-Repelling Charm ~ A charm to protect muggles from the wizarding world; if they approach the charmed area, they suddenly remember urgent appointments. [4,8]

Mulciber ~ A Death Eater [4,30]

Murtlap ~ Rat-like creature found in British coastal areas. Their strained and pickled tentacles make a soothing balm, offering resistance to jinxes and curses. [5,15]

Moaning Myrtle ~ Ghost who haunts the first floor girls toilets. [2,8]