The Collaborative International Dictionary of English v.0.48:
Crax \Crax\ (kr[a^]ks), n. the type genus of the Cracidae; curassows. Syn: genus Crax. [WordNet 1.5]WordNet (r) 3.0 (2006):
Crax n 1: type genus of the Cracidae: curassows [syn: Crax, genus Crax]