| Fathead 1. (n.) A cyprinoid fish of the Mississippi valley (Pimephales promelas); -- called also black-headed minnow. 2. (n.) A labroid food fish of California; the redfish. Thesaurus Entries addlebrain, addlehead, addlepate, beefhead, blockhead, blubberhead, blunderhead, bonehead, boob, booby, bufflehead, cabbagehead, chowderhead, chucklehead, chump, clodhead, clodpate, clodpoll, dolt, dolthead, dullhead, dumbhead, dunderhead, dunderpate, goof, goon, jolterhead, jughead, knucklehead, lunkhead, meathead, muddlehead, mushhead, muttonhead, noodlehead, numskull, oaf, peabrain, pinbrain, pinhead, puddinghead, pumpkin head, puzzlehead, stupidhead, thickhead, thickskull, tottyhead | ![]() |