noun, plural steel·heads, (especially collectively) steel·head.
Examples from the Web for steelhead
The flies named for the red-throat trout are just as killing for the steelhead.Favorite Fish and Fishing|James Alexander Henshall
So he took Osberne from Steelhead's arms, and being a stark and big man got him on to the bed and did off his raiment.
So Steelhead came out of the water presently, and clad himself, while Osberne yet played a while.
As a game fish the steelhead enjoys a high reputation in the Pacific States.The Salmon Fishery of Penobscot Bay and River in 1895-96|Hugh M. Smith
But a steelhead, you ought to know, is a trout—a fish—and the noblest fish that ever was!The Strength of the Pines|Edison Marshall