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 • Hypernyms: quarter day • Part Holonyms: March, Mar 2.(Christianity) the announcement to the Virgin Mary by the angel Gabriel of the incarnation of Christ • Topics: Christianity, Christian religion • Instance Hypernyms: announcement, promulgation