From Old English truht, in part from Old French truite, from Late Latin tructa, perhaps from Ancient Greek τρώκτης (trṓktēs, “nibbler”), from τρώγω (trṓgō, “I gnaw”), from Proto-Indo-European *tere- (“to rub, to turn”). The Internet verb sense originated on BBSes of the 1980s, probably from Monty Python's The Fish-Slapping Dance (1972), though that sketch involved a halibut.
trout (plural trout or trouts)
- Any of several species of fish in Salmonidae, closely related to salmon, and distinguished by spawning more than once.
- Many anglers consider trout to be the archetypical quarry.
- (Britain, pejorative) An elderly woman of dubious sensibilities.
- Look, you silly old trout, you can't keep bringing home cats! You can't afford the ones you have!
- (Internet chat) To (figuratively) slap someone with a slimy, stinky, wet trout; to admonish jocularly.