The Collaborative International Dictionary of English v.0.48:
Codfish \Cod"fish\, n. (Zool.) A kind of fish. Same as Cod. [1913 Webster]WordNet (r) 3.0 (2006):
codfish n 1: lean white flesh of important North Atlantic food fish; usually baked or poached [syn: cod, codfish] 2: major food fish of Arctic and cold-temperate waters [syn: cod, codfish]