The Collaborative International Dictionary of English v.0.48:
Callinectes \Callinectes\ n. a genus of crustaceans comprising the New World blue crabs. Syn: genus Callinectes. [WordNet 1.5]WordNet (r) 3.0 (2006):
Callinectes n 1: New World blue crabs [syn: Callinectes, genus Callinectes]