Pollack \Pol"lack\, n. [Cf. G. & D. pollack, and Gael. pollag a little pool, a sort of fish.] (Zo["o]l.) (a) A marine gadoid food fish of Europe ({Pollachius virens}). Called also {greenfish}, {greenling}, {lait}, {leet}, {lob}, {lythe}, and {whiting pollack}. (b) The American pollock; the coalfish.