Mus·kel·lunge n. Zool. A large American pike (Esox masquinongy formerly Esox nobilior) 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, maskalonge, maskinonge, muskallonge, muskellonge, and muskelunjeh.]
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