Entry 2 senses · 2 variants Webster, 1913 Baa /(bä)/ · IPA /[bæ]/ v. i. n. 01 v. i. To cry baa, or bleat as a sheep. 1. To cry baa, or bleat as a sheep. “He treble baas for help, but none can get.” — Sir P. Sidney. 02 n. The cry or bleating of a sheep; a bleat. pl. Baas ((bäz)) 1. The cry or bleating of a sheep; a bleat.