Mykiss \My"kiss\, n. [Russ. muikize, prob. fr. a native name.]

(Zo["o]l.) A salmon (Salmo mykiss, syn. S. purpuratus) marked with black spots and a red throat, found in most of the rivers from Alaska to the Colorado River, and in Siberia; -- called also black-spotted trout, cutthroat trout, and redthroat trout.

Source: Webster's Revised Unabridged Dictionary (1913)