*blackfish*

n. 1. (Zool.) A small kind of whale, of the genus Globicephalus, of several species. The most common is Globicephalus melas. Also sometimes applied to other whales of larger size. [ 1913 Webster ]

2. (Zool.) The tautog of New England (Tautoga). [ 1913 Webster ]

3. (Zool.) The black sea bass (Centropristis atrarius) of the Atlantic coast. It is excellent food fish; -- locally called also black Harry. [ 1913 Webster ]

4. (Zool.) A fish of southern Europe (Centrolophus pompilus) of the Mackerel family. [ 1913 Webster ]

5. (Zool.) The female salmon in the spawning season. [ 1913 Webster ]

☞ The name is locally applied to other fishes. [ 1913 Webster ]