Source : Webster's Revised Unabridged Dictionary (1913)

Epiphany \E*piph"a*ny\, n. [F. ['e]piphanie, L. epiphania, Gr.
   'epifa`nia (sc. ?), for 'epifa`neia appearance, fr.
   'epifai`nein to show forth; 'epi` + fai`nein to show. See
   {Fancy}.]
   1. An appearance, or a becoming manifest.

            Whom but just before they beheld transfigured and in
            a glorious epiphany upon the mount.   --Jer. Taylor.

            An epic poet, if ever such a difficult birth should
            make its epiphany in Paris.           --De Quincey.

   2. (Eccl.) A church festival celebrated on the 6th of
      January, the twelfth day after Christmas, in commemoration
      of the visit of the Magi of the East to Bethlehem, to see
      and worship the child Jesus; or, as others maintain, to
      commemorate the appearance of the star to the Magi,
      symbolizing the manifestation of Christ to the Gentles;
      Twelfthtide.

Source : WordNet®

epiphany
     n 1: a divine manifestation
     2: twelve days after Christmas; celebrates the visit of the
        three wise men to the infant Jesus [syn: {Epiphany of Our
        Lord}, {Twelfth day}, {Three Kings' Day}, {January 6}]