n.

1. 通告；公布
2. （the A-）（天主教的）天使報喜；天使報喜節（3月25日）

n.

1. (the Annunciation) the announcement of the Incarnation by the angel Gabriel to Mary (Luke 1:26–38).
   ▸a Church festival that commemorates this, held on 25 March (Lady Day).
2. formal or archaic the announcement of something.