Source : Webster's Revised Unabridged Dictionary (1913)

Bellicose \Bel"li*cose`\, a. [L. bellicosus, fr. bellicus of
   war, fr. bellum war. See {Duel}.]
   Inclined to war or contention; warlike; pugnacious.

         Arnold was, in fact, in a bellicose vein. --W. Irving.

Source : WordNet®

bellicose
     adj : having or showing a ready disposition to fight; "bellicose
           young officers"; "a combative impulse"; "a contentious
           nature" [syn: {battleful}, {combative}, {contentious}]