Manqué (Roulette)	:	The French term for low.
Markers	:	Promissory notes or IOUs signed by players who have credit in casinos.
Martingale System	:	A progressive betting method in which the player doubles his bet after a previous loss.
Mechanic, Slots Mechanic (Slots)	:	The house employee who sets the machines for their payoffs and repairs broken slot machines.
Mills Machines (Slots)	:	The first machines to use fruit symbols and to have a jackpot.
Mini-Baccarat	:	The game of baccarat played on an ordinary gambling table, with one dealer’ to service the game
Mini-Junkets	:	A junket with different costs depending on how much the player is willing to put up as front money.
Miss, Miss Out	:	See Seven-Out
Money Wheel	:	Another term for the big six wheel.
Muckers	:	See Hand Muckers
Multiple-Deck Game (Blackjack)	:	The use of two or more decks in the game.