Source : Webster's Revised Unabridged Dictionary (1913)

Acquittal \Ac*quit"tal\, n.
   1. The act of acquitting; discharge from debt or obligation;
      acquittance.

   2. (Law) A setting free, or deliverance from the charge of an
      offense, by verdict of a jury or sentence of a court.
      --Bouvier.

Source : WordNet®

acquittal
     n : a judgment of not guilty [ant: {conviction}]