The Collaborative International Dictionary of English v.0.48:

Accuse \Ac*cuse"\, v. t. [imp. & p. p. Accused; p. pr. & vb.
   n. Accusing.] [OF. acuser, F. accuser, L. accusare, to call
   to account, accuse; ad + causa cause, lawsuit. Cf. Cause.]
   1. To charge with, or declare to have committed, a crime or
      offense; (Law) to charge with an offense, judicially or by
      a public process; -- with of; as, to accuse one of a high
      crime or misdemeanor.
      [1913 Webster]

            Neither can they prove the things whereof they now
            accuse me.                            --Acts xxiv.
                                                  13.
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            We are accused of having persuaded Austria and
            Sardinia to lay down their arms.      --Macaulay.
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   2. To charge with a fault; to blame; to censure.
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            Their thoughts the meanwhile accusing or else
            excusing one another.                 --Rom. ii. 15.
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   3. To betray; to show. [R.]                    --Sir P.
                                                  Sidney.
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   Syn: To charge; blame; censure; reproach; criminate; indict;
        impeach; arraign.

   Usage: To Accuse, Charge, Impeach, Arraign. These
          words agree in bringing home to a person the
          imputation of wrongdoing. To accuse is a somewhat
          formal act, and is applied usually (though not
          exclusively) to crimes; as, to accuse of treason.
          Charge is the most generic. It may refer to a crime, a
          dereliction of duty, a fault, etc.; more commonly it
          refers to moral delinquencies; as, to charge with
          dishonesty or falsehood. To arraign is to bring (a
          person) before a tribunal for trial; as, to arraign
          one before a court or at the bar public opinion. To
          impeach is officially to charge with misbehavior in
          office; as, to impeach a minister of high crimes. Both
          impeach and arraign convey the idea of peculiar
          dignity or impressiveness.
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The Collaborative International Dictionary of English v.0.48:

Accused \Ac*cused"\, a.
   Charged with offense; as, an accused person.
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   Note: Commonly used substantively; as, the accused, one
         charged with an offense; the defendant in a criminal
         case.
         [1913 Webster]

WordNet (r) 3.0 (2006):

accused
    n 1: a defendant in a criminal proceeding

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "accused":
   arraigned, blamed, charged, cited, correspondent, defendant,
   denounced, impeached, implicated, impugned, in complicity,
   incriminated, inculpated, indicted, involved, libelee, prisoner,
   reproached, respondent, suspect, tasked, taxed, under attack,
   under fire