lake trout

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A freshwater food and game fish (Salvelinus namaycush) of the Great Lakes. Also called Mackinaw trout, namaycush, togue.

Century Dictionary and Cyclopedia

1. n. The common salmon-trout of western North America, Salmo purpuratus; the Rocky Mountain brook-trout; the Yellowstone trout. It is one of the river-salmon, not anadromous, and belongs to the section Fario of the genus Salmo. It has a narrow band of small teeth on the hyoid bone. The caudal fin is slightly forked; the dorsal rather low. It is extremely variable in size, coloration, and character of the scales. It may be generally recognized by the profusion of small round black spots on most of the body, and a red blotch on the lower jaw. It is regarded as the parent stock of several varieties of black-spotted trout. It abounds in the rivers of Alaska, Oregon, and Washington, there descending to the sea, and sometimes attains a weight of 20 pounds; it is also found in the Yellowstone and upper Missouri regions, the Great Basin of Utah, in Colorado, and in the upper Rio Grande. The Waha lake-trout of Washington is a variety (bouvieri) of this species. Another variety, found from the Kansas to the upper Missouri, is called var. stomias. A third is var. henshawi, the silver or black trout of Lake Tahoe, Pyramid Lake, and the streams of the Sierra Nevada. The variations of this fish have given rise to many technical names, among them Salmo tsuppitch. See cut under salmon-trout.
2. n. The Mackinaw trout, Salvelinus namaycush, more fully called the great lake-trout; the longe of Vermont; the togue of Maine. This is an entirely different fish from the foregoing, being near a char. The mouth is large, with very strong teeth; the caudal fin is well forked, the adipose small; the color is dark gray, sometimes pale, sometimes blackish, everywhere marked with rounded paler spots, often tinged with red-dish. This fish sometimes attains a length of 3 feet: it abounds in the larger bodies of water of Maine, New Hampshire, Vermont, northern New York, and the Great Lake region, to Montana and northward. A variety of this, found only in Lake Superior, is known as the siscowet.
3. n. A fish, Galaxias auratus, of the family Galaxidæ, found in Tasmania.

Wiktionary

1. n. A large species of trout found in lakes in North America, Salvelinus namaycush

GNU Webster's 1913

1. n. (Zoöl.) any one of several species of trout and salmon; in Europe, esp. Salmo fario; in the United States, esp. Salvelinus namaycush of the Great Lakes, and of various lakes in New York, Eastern Maine, and Canada. A large variety of brook trout (Salvelinus fontinalis), inhabiting many lakes in New England, is also called lake trout. See Namaycush.

WordNet 3.0

1. n. large fork-tailed trout of lakes of Canada and the northern United States
2. n. flesh of large trout of northern lakes