Trout \Trout\ (trout), n. [AS. truht, L. tructa, tructus; akin to Gr. trw`kths a sea fish with sharp teeth, fr. trw`gein to gnaw.]

1. (Zo["o]l.) Any one of numerous species of fishes belonging to Salmo, Salvelinus, and allied genera of the family Salmonid[ae]. They are highly esteemed as game fishes and for the quality of their flesh. All the species breed in fresh water, but after spawning many of them descend to the sea if they have an opportunity.

Source: Webster's Revised Unabridged Dictionary (1913)