(childish) A cow.

Alternative form of muumuu

plural of moo-moo

A surname.

(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.

(onomatopoeia) The characteristic lowing sound made by cattle. / (UK, slang, mildly derogatory) A foolish woman.

(intransitive) Of a cow or bull, to make its characteristic lowing sound.

The characteristic sound made by a cow or bull.

plural of mooing