Main Entry: rainbow trout

Function: noun

Date: 1882

: a large stout-bodied salmonid fish (Oncorhynchus mykiss syn. Salmo gairdneri) of western North America that is related to the Pacific salmon and is typically greenish above and white on the belly with a pink, red, or lavender stripe along each side of the body and with profuse black dots — compare steelhead

[rainbow trout illustration]