hot-head

from The Collaborative International Dictionary of English v.0.48

Hot-head \Hot"-head`\, n.
   A violent, passionate person; a hasty or impetuous person;
   as, the rant of a hot-head.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

60 Moby Thesaurus words for "hothead":
      Mafioso, Tartar, Young Turk, bear, beast, beldam, berserk,
      berserker, bomber, brute, crank, crosspatch, demon, devil, dragon,
      feist, fiend, fire-eater, firebrand, fury, goon, gorilla,
      grizzly bear, grouch, gunsel, hardnose, hell-raiser, hellcat,
      hellhound, hellion, holy terror, hood, hoodlum, hotspur,
      incendiary, killer, mad dog, madcap, monster, mugger, rapist,
      revolutionary, savage, she-wolf, sorehead, spitfire, termagant,
      terror, terrorist, tiger, tigress, tough, tough guy, ugly customer,
      violent, virago, vixen, wild beast, witch, wolf