brookinawEtymologyBlend of brook + mackinaw, after the parent species. Mackinaw trout being another name for lake trout.brookinaw means A hybrid fish derived from a male lake trout and a female brook trout. Lexicurio rates it Sui generis — a strength score of 98 out of 100.nounA hybrid fish derived from a male lake trout and a female brook trout.