The Collaborative International Dictionary of English v.0.48:Baa \Baa\ (b[aum]), n.; pl. Baas (b[aum]z). [Cf. G. b[aum].] The cry or bleating of a sheep; a bleat. [1913 Webster] WordNet (r) 3.0 (2006):baas n 1: South African term for `boss'