fishman noun2 •A man who sells fish.Fishmen and fishwomen, costermongers and other small traders, spit on their “hansel” (the first money they take); and boxers spit on their hands to make them deliver winning blows. — 1899 •A mythic or fictional being that is part man, part fish.In volume 2 Flash is transformed into one of Mongo’s fishmen in an effort to save his life! — 1982 formsfishmen