Maiden
Magic Number
Major Penalty
Majority Draw
Man Advantage
Man In Motion
Man On
Man-To-Man Defense
Mando
Mankad
Marking (Field Hockey)
Marking (Soccer)
Match Penalty
Match Point
Match-Up Zone Defense
Max Protect
Meat
Meatball
Mechanical Bridge
Meg
Men In Blue
Mendoza Line
Messenger
Mid-Level Exception
Mid-Range Jump Shot
Middle Finger
Middle Infielders
Middle Linebacker (MLB)
Midfielder
Milk Run
Minor Penalty
Mishit
Mogul Skiing
Moneyline
Moonshot
Motion Offense
Mouse
Moving Violation
Mud Ball
Muffed Punt
Mulligan
Multiple Contacts