WordNet (r) 3.0 (2006):

Esther
    n 1: (Old Testament) a beautiful Jewess chosen by the king of
         Persia to be his queen; she stopped a plot to massacre all
         the Jews in Persia (an event celebrated by Jews as the
         feast of Purim)
    2: an Old Testament book telling of a beautiful Jewess who
       became queen of Persia and saved her people from massacre
       [syn: Esther, Book of Esther]