The Collaborative International Dictionary of English v.0.48:

Defraud \De*fraud"\, v. t. [imp. & p. p. Defrauded; p. pr. &
   vb. n. Defrauding.] [L. defraudare; de- + fraudare to
   cheat, fr. fraus, fraudis, fraud: cf. OF. defrauder. See
   Fraud.]
   To deprive of some right, interest, or property, by a
   deceitful device; to withhold from wrongfully; to injure by
   embezzlement; to cheat; to overreach; as, to defraud a
   servant, or a creditor, or the state; -- with of before the
   thing taken or withheld.
   [1913 Webster]

         We have defrauded no man.                --2 Cor. vii.
                                                  2.
   [1913 Webster]

         Churches seem injured and defrauded of their rights.
                                                  --Hooker.
   [1913 Webster]

WordNet (r) 3.0 (2006):

defraud
    v 1: deprive of by deceit; "He swindled me out of my
         inheritance"; "She defrauded the customers who trusted
         her"; "the cashier gypped me when he gave me too little
         change" [syn: victimize, swindle, rook, goldbrick,
         nobble, diddle, bunco, defraud, scam, mulct,
         gyp, gip, hornswoggle, short-change, con]

Moby Thesaurus II by Grady Ward, 1.0:

99 Moby Thesaurus words for "defraud":
   abstract, and, annex, appropriate, bag, bamboozle, beat, beguile,
   beguile of, bilk, boost, borrow, bunco, burn, cheat, chisel,
   chouse, chouse out of, circumvent, cog, cog the dice, con, cop,
   cozen, crib, deceive, delude, diddle, do, do in, do out of, dupe,
   embezzle, euchre, extort, filch, finagle, flam, fleece, flimflam,
   fob, foil, fool, fudge, gouge, gull, gyp, have, hoax, hocus,
   hocus-pocus, hoodwink, hook, humbug, lift, make off with, milk,
   mulct, nip, outwit, pack the deal, palm, pigeon, pilfer, pinch,
   poach, practice fraud upon, purloin, rip off, rob, rook, rope in,
   run away with, rustle, scam, screw, scrounge, sell gold bricks,
   shave, shoplift, shortchange, snare, snatch, snitch,
   stack the cards, steal, stick, sting, swindle, swipe, take,
   take a dive, take in, thieve, thimblerig, throw a fight, trick,
   victimize, walk off with