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[trout] /traʊt/
noun, plural (especially collectively) trout (especially referring to two or more kinds or species) trouts.
any of several game fishes of the genus Salmo, related to the salmon.
any of various game fishes of the salmon family of the genus Salvelinus.
Compare brook trout (def 1), char2 , Dolly Varden (def 4), lake trout.
any of several unrelated fishes, as a bass, Micropterus salmoides, a drum of the genus Cynoscion, or a greenling of the genus Hexagrammos.
Origin of trout
before 1050; Middle English trou(h)te, Old English truht < Latin tructa < Greek trṓktēs gnawer, a sea fish, equivalent to trṓg(ein) to gnaw + -tēs agent noun suffix
Related forms
troutless, adjective
troutlike, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for trout


noun (pl) trout, trouts
any of various game fishes, esp Salmo trutta and related species, mostly of fresh water in northern regions: family Salmonidae (salmon). They resemble salmon but are smaller and spotted
any of various similar or related fishes, such as a sea trout
(Austral) any of various fishes of the Salmo or Oncorhynchus genera smaller than the salmon, esp European and American varieties naturalized in Australia
(Brit, informal) an irritating or grumpy person, esp a woman
Word Origin
Old English trūht, from Late Latin tructa, from Greek troktēs sharp-toothed fish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for trout

Old English truht "trout," in part from Old French truite, both from Late Latin tructa, perhaps from Greek troktes "a kind of sea fish," literally "nibbler," from trogein "to gnaw," from PIE root *tere- (see throw). In late 17c. slang, trusty trout was used in a sense of "confidential friend."

Online Etymology Dictionary, © 2010 Douglas Harper
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