The action of the verb moo; a mooing sound.

(humorous) (of a steak) very rare

(video games) Initialism of Master of Orion.

Initialism of matter of opinion. / (video games) Initialism of MUD, object-oriented. / (dated, postal) Initialism of Money Order Office. / (astronomy) Initialism of massive overdense object.

simple past tense and past participle of moo

plural of mooing

A surname.

Alternative spelling of moo-cow

plural of moo cow

(childish or endearing) A cow.