whitefish noun 5verb 1forms 3 noun5 •Any of several North American freshwater fish, of the genus Coregonus, used as food. •Any of several species of demersal fish with fins, particularly cod, whiting, and haddock, as opposed to the oily or pelagic fishes. •Any of several other fish, such as whiting (Merlangius merlangus) or menhaden (Brevoortia spp. and Ethmidium spp.). •A lesser queenfish (Scomberoides lysan) •A beluga (both the sturgeon and the whale). verb1 •To fish for whitefish.“Perhaps he went whitefishing after he had his supper.” — 1894 formswhitefished · whitefishing · whitefishes