Baa (bä), v. i. [Cf. G. bäen; an imitative word.] To cry baa, or bleat as a sheep.[1913 Webster]
He treble baas for help, but none can get.
Baa (bä), n.; pl. Baas (bäz). [Cf. G. bä.] The cry or bleating of a sheep; a bleat.[1913 Webster]