The Collaborative International Dictionary of English v.0.48:
Centaurus \Centaurus\ n. a conspicuous constellation in the southern hemisphere near the Southern Cross. Syn: Centaur, The Centaur. [WordNet 1.5]WordNet (r) 3.0 (2006):
Centaurus n 1: a conspicuous constellation in the southern hemisphere near the Southern Cross [syn: Centaurus, Centaur]