flesh of any of several primarily freshwater game and food fishes
"The chef prepared a savory dish using fresh trout, highlighting the delicate flavor of its meat."
any of various game and food fishes of cool fresh waters mostly smaller than typical salmons
"The angler cast his line into the cool mountain stream, hoping to catch a trout rather than a salmon."
Any of several species of fish in Salmonidae, closely related to salmon, and distinguished by spawning more than once.
"The angler caught a trout that was distinct from salmon because it had spawned multiple times over its life."
In plain English: A trout is a small, tasty fish that lives in cold rivers and lakes and has spots on its back.
"We caught a fresh trout while fishing in the river earlier today."
Usage: Trout refers specifically to freshwater fish that spawn multiple times in their lives, distinct from the closely related salmon which typically spawns only once before dying. As a verb, it is used informally and humorously to describe lightly slapping someone with a wet trout as a playful admonishment.
To (figuratively) slap someone with a slimy, stinky, wet trout; to admonish jocularly.
"The coach gave his rookie a playful trout after he missed the easy catch."
In plain English: To trout is to move quickly and energetically through water, usually while fishing for it.
"The fisherman decided to trout in the deep, cold waters where he hoped to find large catches."
A surname.
"The Trout family has owned the local bakery for three generations."
The word trout comes from Old English and Old French roots derived from Late Latin for "nibble," referring to the fish's habit of gnawing at bait or plants. It entered Middle English as both a noun for the freshwater fish and later developed an unrelated internet slang meaning based on 1980s bulletin board systems, likely inspired by Monty Python sketches despite featuring halibut instead.