What is the meaning of Moo?

The characteristic lowing sound made by cattle.

A foolish woman.

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

The characteristic sound made by a cow or bull.

river

Synonym of mooma

vocative of mooma

there; distal demonstrative adverb.

tree, wood

first-person singular present indicative of moer

Rōmaji transcription of もお

comparative degree of mooar (big, great, large)

first-person singular present indicative of moer

leg; foot

Source: wiktionary.org