もーもーMeaningsAdverbAdverb taking と1. moo (sound of a cow) (Onomatopoeia)Noun2. moo-cow; moo-moo (Children's language, Onomatopoeia)Other readingsモーモーもうもうモウモウExamples1「モーモー」と牛うしは鳴ないた。"Moo, moo," said the cow.