[king.fish] n (1750) 1: any of several marine croakers (family Sciaenidae) a: any of three fishes (Menticirrhus americanus, M. littoralis, and M. saxatilis) of shallow coastal waters of the Atlantic Ocean b: a small silvery food and sport fish (Genyonemus lineatus) of inshore waters esp. of California--called also white croaker
2: king mackerel
3: an undisputed master in an area or group