Source : Webster's Revised Unabridged Dictionary (1913)

Accusation \Ac`cu*sa"tion\, n. [OF. acusation, F. accusation, L.
   accusatio, fr. accusare. See {Accuse}.]
   1. The act of accusing or charging with a crime or with a
      lighter offense.

            We come not by the way of accusation To taint that
            honor every good tongue blesses.      --Shak.

   2. That of which one is accused; the charge of an offense or
      crime, or the declaration containing the charge.

            [They] set up over his head his accusation. --Matt.
                                                  xxvii. 37.

   Syn: Impeachment; crimination; censure; charge.

Source : WordNet®

accusation
     n 1: a formal charge of wrongdoing brought against a person; the
          act of imputing blame or guilt [syn: {accusal}]
     2: an assertion that someone is guilty of a fault or offence;
        "the newspaper published charges that Jones was guilty of
        drunken driving" [syn: {charge}]