Bleat

Part of speech: noun (n.)

A plaintive cry of, or like that of, a sheep. The bleat of fleecy sheep. Chapman's Homer.

Part of speech: verb (v.)

To make the noise of, or one like that of, a sheep; to cry like a sheep or calf. Then suddenly was heard along the main, To low the ox, to bleat the woolly train. Pope The ewe that will not hear her lamb when it baas, will never answer a calf when he bleats. Shak.