[Mod] "Moderator" (usually referring to a forum) or "modification"

[moggy] {n.} Cat.

[moke] {n.} Donkey.

[molehill] See: [MAKE A MOUNTAIN OUT OF A MOLEHILL].

[moment] See: [ON THE SPUR OF THE MOMENT].

[Monday] See: [BLUE MONDAY].

[money] See: [COIN MONEY] or [MINT MONEY], [EASY MONEY], [FOOL AND […]

[money burns a hole in one's pocket] See: [BURN A HOLE […]

[money is no object] {informal sentence} The price of something is […]

[money to burn] {n. phr.}, {informal} Very much money, more than […]