Gladiator

n.	1.	Originally, a swordplayer; hence, one who fought with weapons in public, either on the occasion of a funeral ceremony, or in the arena, for public amusement.
	2.	One who engages in any fierce combat or controversy.

Noun	1.	gladiator - (ancient Rome) a professional combatant or a captive who entertained the public by engaging in mortal combat
	2.	gladiator - a professional boxer Synonyms: prizefighter

belligerent, belted knight, bickerer, blade, bravo, brawler, bully, bullyboy, contestant, disputant, duelist, enforcer, fencer, feuder, fighting cock, foilsman, gamecock, goon, gorilla, hatchet man, hood, hoodlum, hooligan, jouster, knight, militant, plug-ugly, quarreler, rioter, rival, rough, rowdy, ruffian, sabreur, scrapper, scuffler, squabbler, strong arm, strong-arm man, strong-armer, struggler, swashbuckler, sword, swordplayer, swordsman, thug, tilter, tough, tussler, wrangler