moo
n. countable A2 Elementary US //ˈmu// UK //mˈuː// moo
n. the low, deep sound that a cow makes. You use this word to describe the noise of cattle.
n. the characteristic low, deep vocalisation produced by cattle. Often used onomatopoeically in children's literature or to describe the sound of a herd.
The cow gives a loud moo when it sees the farmer.
We woke up early to the sound of a distant moo coming from the neighbor's pasture.
The silence of the rural evening was interrupted only by the occasional, resonant moo of a cow grazing near the fence.
Onomatopoeic.
Usage
Often used as an onomatopoeia; can also function as a verb meaning to make this sound.