an·nun·ci·a·tion /əˌnʌn(t)siˈeʃən/
  報喜,天使報喜節
  An·nun·ci·a·tion n.
  1. The act of announcing; announcement; proclamation; as, the annunciation of peace.
  2. Eccl. (a) The announcement of the incarnation, made by the angel Gabriel to the Virgin Mary. (b) The festival celebrated (March 25th) by the Church of England, of Rome, etc., in memory of the angel's announcement, on that day; Lady Day.
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  Annunciation
       n 1: a festival commemorating the announcement of the Incarnation
            by the angel Gabriel to the Virgin Mary; a quarter day
            in England, Wales, and Ireland [syn: Lady Day, Annunciation
            Day, March 25]
       2: (Christianity) the announcement to the Virgin Mary by the
          angel Gabriel of the incarnation of Christ
       3: a formal public statement; "the government made an
          announcement about changes in the drug war"; "a
          declaration of independence" [syn: announcement, proclamation,
           declaration]