Baa \Baa\ (b[aum]), v. i. [Cf. G. b["a]en; an imitative word.] To cry baa, or bleat as a sheep.
He treble baas for help, but none can get. --Sir P. Sidney.
Source: Webster's Revised Unabridged Dictionary (1913)
Baa \Baa\ (b[aum]), n.; pl. Baas (b[aum]z). [Cf. G. b["a].] The cry or bleating of a sheep; a bleat.