trout /traʊt/ BrE AmE noun
[ Date: 1000-1100 ; Language: Late Latin ; Origin: tructa type of fish with sharp teeth, from Greek , from trogein 'to bite' ]
1 . ( plural trout ) [uncountable and countable] a common river-fish, often used for food, or the flesh of this fish
2 . old trout British English spoken an unpleasant or annoying old person, especially a woman