Source : Webster's Revised Unabridged Dictionary (1913)

Guilt \Guilt\ (g[i^]lt), n. [OE. gilt, gult, AS. gylt, crime;
   probably originally signifying, the fine or mulct paid for an
   offence, and afterward the offense itself, and akin to AS.
   gieldan to pay, E. yield. See {Yield}, v. t.]
   1. The criminality and consequent exposure to punishment
      resulting from willful disobedience of law, or from
      morally wrong action; the state of one who has broken a
      moral or political law; crime; criminality; offense
      against right.

            Satan had not answer, but stood struck With guilt of
            his own sin.                          --Milton.

   2. Exposure to any legal penalty or forfeiture.

            A ship incurs guilt by the violation of a blockade.
                                                  --Kent.

Source : WordNet®

guilt
     n 1: the state of having committed an offense [syn: {guiltiness}]
          [ant: {innocence}]
     2: remorse caused by feeling responsible for some offence [syn:
         {guilty conscience}, {guilt feelings}, {guilt trip}]