rockfish n 1: the lean flesh of any of various valuable market fish caught among rocks 2: marine food fish found among rocks along the northern coasts of Europe and America 3: marine food and game fish with dark longitudinal stripes; migrates upriver to spawn; sometimes placed in the genus Morone [syn: {striped bass}, {striper}, {Roccus saxatilis}] [also: {rockfishes} (pl)] rockfishes See {rockfish}