Any of several species of fish in Salmonidae, closely related to salmon, and distinguished by spawning more than once. / (Britain, derogatory) An objectionable elderly woman.

(Internet chat) To (figuratively) slap someone with a slimy, stinky, wet trout; to admonish jocularly.

Alternative spelling of troublemaker

(Ireland, historical) The continued violence and terrorist, military and paramilitary activity in Northern Ireland that happened from the mid 1960s to the late 1990s.

A distressing or dangerous situation. / A difficulty, problem, condition, or action contributing to such a situation. / A violent occurrence or event.

(transitive, now rare) To disturb, stir up, agitate (a medium, especially water). / (transitive) To mentally distress; to cause (someone) to be anxious or perplexed.

(Cockney rhyming slang, Australian rhyming slang) Wife.

A pocket in a pair of trousers.

(slang, UK) The exaggerated, grotesque result of injection of excessive quantities of collagen into the lips in order to make them appear fuller.

(used attributively as a modifier) Of or relating to trousers. / (in clothing retail and fashion) A pair of trousers.