1. [noun] Any of several species of fish in Salmonidae, closely related to salmon, and distinguished by spawning more than once.
2. [noun] (British) (pejorative) An elderly woman of dubious sensibilities.
3. [verb] (Internet chat) To (figuratively) slap someone with a slimy, stinky, wet trout; to admonish jocularly.
4. [noun] Flesh of any of several primarily freshwater game and food fishes.
5. [noun] Any of various game and food fishes of cool fresh waters mostly smaller than typical salmons.
