ba / baa / bah [bɒ]
ba – n. – 1. the divine, immortal, eternal and ultimately divine soul in Egyptian religious belief represented as a bird with a human head and believed to leave the body at death and return eventually to revivify the body if it is preserved; 2. v. - the bleat of a sheep
baa – v. intr. – bleat (like a sheep); n – the imitation of or bleat of a sheep or lamb
bah – interjection – expression of contempt or disbelief