The Collaborative International Dictionary of English v.0.48:

Swordsman \Swords"man\, n.; pl. Swordsmen.
   1. A soldier; a fighting man.
      [1913 Webster]

   2. One skilled of a use of the sword; a professor of the
      science of fencing; a fencer.
      [1913 Webster]

WordNet (r) 3.0 (2006):

swordsman
    n 1: someone skilled at fencing [syn: fencer, swordsman]

Moby Thesaurus II by Grady Ward, 1.0:

55 Moby Thesaurus words for "swordsman":
   battler, belligerent, belted knight, bickerer, blade, bravo,
   brawler, bully, bullyboy, combatant, competitor, contender,
   contestant, disputant, duelist, 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, thug,
   tilter, tough, tussler, wrangler