HBACif a cow moos, it makes a long low sound 〔母牛〕发出哞哞声
—moo noun [countableC]
Examples from the Corpus
moo• An outbreak of mooing in the crowd swells until most of the club is doing it.• In no time at all the kid was at my door with a bag full of sesame noodles and moo shu pork.