trout

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various freshwater or anadromous food and game fishes of the family Salmonidae, especially of the genera Salmo and Salvelinus, usually having a streamlined, speckled body with small scales.
2. n. Any of various similar but unrelated fishes, such as the troutperch.
3. n. Chiefly British An elderly woman regarded as being silly.

Century Dictionary and Cyclopedia

1. n. A fish of the family Salmonidæ, Salmo trutta, with blackish spots, common in the colder fresh waters of Europe, and highly esteemed as a food-fish and game-fish; any species of the same section of Salmo (see Salmo ); a river-salmon, salmon-trout, or lake-trout. In Europe, under the names S. trutta and S. fario, numerous forms have been alternately combined and then separated into subspecies and varieties, or accorded full specific rank. Day considers that there are but two species of British Salmonidæ—the salmon, Salmo salar, and the trout, S. trutta. Others divide the latter into S. trutta and S. fario, and these again into others, as S. cambricus, the sewin; S. gallivensis, the Galway trout; S. stomachicus, the Gillaroo trout; S. levenensis, the Loch Leven trout; etc.
2. n. A fish of the family Salmonidæ and genus Salvelinus (with its section Cristivomer), resembling those called in Europe char. See Salvelinus, and cuts under char and lake-trout, 2. All the American chars are called trout, with or without a qualifying term. These are red-spotted. The leading forms are the common speckled trout, or brook-trout, of eastern North America, S. fontinalis; the blue-backed trout, S. oquassa, of Maine, Vermont, etc.; the Dolly Varden trout of the Pacific slope, S. malma, whose red spots are very large; together with the great lake-trout, S. (Cristivomer) namaycush. See phrases following.
3. n. Any fish of the family Galaxiidæ (which see).
4. n. With a qualifying word, one of several fishes, not of the family Salmonidæ, resembling or suggesting a trout. See phrases below.
5. n. One of several different trouts (not chars) of the western parts of North America, of the genus Salmo. See def. 1 .
6. n. A weakfish or sea-trout, Cynoscion thalassinus.
7. n. Salmo ferox of England.
8. n. The black-bass, Micropterus salmoides.
9. n. The Dolly Varden trout.
10. n. The black-spotted trout, or mountain-trout of western North America.
11. n. The Lake Tahoe trout.
12. n. with black (see def. 1 )
13. n. with red—a speckled trout (see def. 2).
14. n. The weakfish or sea-trout Cynoscion maculatus.
15. n. The bastard trout.
16. To fish for or catch trout.
17. Same as troat.

Wiktionary

1. n. Any of several species of fish in Salmonidae, closely related to salmon, and distinguished by spawning more than once.
2. n. UK, pejorative An elderly woman of dubious sensibilities.
3. v. To (figuratively) slap someone with a slimy, stinky, wet trout; to admonish jocularly.

GNU Webster's 1913

1. n. (Zoöl.) Any one of numerous species of fishes belonging to Salmo, Salvelinus, and allied genera of the family Salmonidæ. They are highly esteemed as game fishes and for the quality of their flesh. All the species breed in fresh water, but after spawning many of them descend to the sea if they have an opportunity.
2. n. (Zoöl.) Any one of several species of marine fishes more or less resembling a trout in appearance or habits, but not belonging to the same family, especially the California rock trouts, the common squeteague, and the southern, or spotted, squeteague; -- called also salt-water trout, sea trout, shad trout, and gray trout. See Squeteague, and Rock trout under Rock.

WordNet 3.0

1. n. flesh of any of several primarily freshwater game and food fishes
2. n. any of various game and food fishes of cool fresh waters mostly smaller than typical salmons