rainbow trout

noun

: 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

Illustration of rainbow trout

Examples of rainbow trout in a Sentence

Recent Examples on the Web

Two days before the event, the lake was stocked with 2,000 pounds of rainbow trout by Wright’s Rainbows, a company based in Thacher, Idaho that specializes in supplying trout for recreational fishing ponds. —Amy Stark Shireman, San Diego Union-Tribune, 11 Feb. 2026

This crystal-clear waterway is home to multiple species of fish, including rainbow trout and the (adorable) arroyo chub. —Jaclyn Cosgrove, Los Angeles Times, 22 Jan. 2026

There are also some rainbow trout. —Paige Moore, AZCentral.com, 22 Jan. 2026

Fatty fish like salmon, rainbow trout, and swordfish deliver significantly more vitamin D per serving than eggs. —Jillian Kubala, Health, 21 Jan. 2026

Word History

First Known Use

1880, in the meaning defined above

Rhymes for rainbow trout

• roundabout
• runabout
• sauerkraut
• thereabout
• turnabout
• about
• bailout
• blackout
• blowout
• breakout
• burnout
• buyout

Kids Definition

rainbow trout

noun

: a large trout native to western North America that usually has red or pink stripes with black dots on its sides compare steelhead