rainbow trout

noun
Updated on: 19 Apr 2018

Definition of rainbow trout

: a large stout-bodied salmonid fish (Oncorhynchus mykiss synonym 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

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First Known Use of rainbow trout

1880

in the meaning defined above

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