(n.) A person with a large head; a numskull; a dunce.

addlebrain addlehead beefhead blockhead blubberhead blunderhead bonehead bufflehead cabbagehead chowderhead chucklehead clodhead clodpate clodpoll dolthead dullhead dumbhead dunderhead dunderpate fathead jolterhead jughead knucklehead lunkhead meathead muddlehead mushhead muttonhead noodlehead numskull peabrain pinbrain pinhead puddinghead pumpkin head puzzlehead stupidhead thickhead thickskull tottyhead