Muskellunge \Mus"kel*lunge\, n. [From the Amer. Indian name.] (Zo["o]l.) A large American pike ({Esox nobilitor}) found in the Great Lakes, and other Northern lakes, and in the St. Lawrence River. It is valued as a food fish. [Written also {maskallonge}, {maskinonge}, {muskallonge}, {muskellonge}, and {muskelunjeh}.]