noun
or pol·lock ˈpälək
( plural pollack also pollacks or pollock also pollocks )
Etymology: alteration of earlier podlok
: an important and highly esteemed marine food fish ( Pollachius virens ) of both coasts of the north Atlantic related to and resembling the cods but darker and more lustrous and with a longer lower jaw — called also bluefish, coalfish, saithe ; see walleye pollack