M

Mickey Mantle: Making a score of 7 on a hole.

Medal play: Style of scoring in which the player with the fewest strokes wins. Most professional tournaments are medal play. Also known as "stroke play".

Member's bounce: Any favorable bounce of the golf ball that improves what initially appeared to be an errant shot.

Mis-read: When a player takes an incorrect line on a putt.

Mulligan: A do-over, or replay of the shot. It is not allowed by the rules and not practiced in tournaments, but is common in casual rounds in some countries, especially the United States.

N

Nassau: A type of bet between golfers that is essentially three separate bets. Money is wagered on the best score in the front 9, back 9, and total 18 holes.

O

Open stance: When a player sets up with their front foot to the inside of the target line.

Out-of-bounds: The area designated as being outside the boundaries of the course. When a shot lands "O.B.", the player "loses stroke and distance," meaning that he/she must hit another shot from the original spot and is assessed a one-stroke penalty. Out-of-bounds areas are usually indicated by white posts.

---

All golf term definitions are taken from Wikipedia ®