duelist

from WordNet (r) 3.0 (2006)

duelist
    n 1: a person who fights duels [syn: {dueler}, {dueller},
         {duelist}, {duellist}]

from The Collaborative International Dictionary of English v.0.48

Duelist \Du"el*ist\, n. [F. duelliste.]
   One who fights in single combat. [Written also {duellist}.]
   [1913 Webster]

         A duelist . . . always values himself upon his courage,
         his sense of honor, his fidelity and friendship.
                                                  --Hume.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

55 Moby Thesaurus words for "duelist":
      battler, belligerent, belted knight, bickerer, blade, bravo,
      brawler, bully, bullyboy, combatant, competitor, contender,
      contestant, disputant, enforcer, fencer, feuder, fighter,
      fighting cock, foilsman, gamecock, gladiator, 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