Sebastichthys rosaceus

Corsair Cor"sair (k?r"s?r), n. [F. corsaire (cf. It. corsare, corsale, Pr. corsari), LL. corsarius, fr. L. cursus a running, course, whence Sp. corso cruise, corsa cruise, coasting voyage, corsear to cruise against the enemy, to pirate, corsario cruising, a privateer authorized to cruise against the enemy. See {Course}.] 1. A pirate; one who cruises about without authorization from any government, to seize booty on sea or land. [1913 Webster]

2. A piratical vessel. [1913 Webster]

Barbary corsairs . . . infested the coast of the Mediterranean. --Prescott. [1913 Webster]

3. (Zo["o]l.) A Californian market fish ({Sebastichthys rosaceus}). [Webster 1913 Suppl.]