bandit

from WordNet (r) 3.0 (2006)

bandit
    n 1: an armed thief who is (usually) a member of a band [syn:
         {bandit}, {brigand}]

from The Collaborative International Dictionary of English v.0.48

Bandit \Ban"dit\ (b[a^]n"d[i^]t), n.; pl. {Bandits}
   (b[a^]n"d[i^]ts), or {Banditti} (b[a^]n*d[i^]t"t[i^]). [It.
   bandito outlaw, p. p. of bandire to proclaim, to banish, to
   proscribe, LL. bandire, bannire. See {Ban} an edict, and cf.
   {Banish}.]
   An outlaw; a brigand.
   [1913 Webster]

         No savage fierce, bandit, or mountaineer. --Milton.
   [1913 Webster]

   Note: The plural banditti was formerly used as a collective
         noun.
         [1913 Webster]

               Deerstealers are ever a desperate banditti. --Sir
                                                  W. Scott.
         [1913 Webster]

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

BANDIT. A man outlawed; one who is said to be under ban.

from Moby Thesaurus II by Grady Ward, 1.0

31 Moby Thesaurus words for "bandit":
      air armada, air force, badman, bogey, bravo, brigand, bummer,
      combat plane, cutthroat, dacoit, desperado, enemy aircraft,
      footpad, forager, freebooter, gangster, highwayman, holdup man,
      hoodlum, looter, mobsman, mobster, pillager, plunderer, racketeer,
      raider, ravager, sacker, slaunchways, thug, villain