es'tur, a Jewess who became the queen of Ahasuerus, king of Persia, and whose story is told in the book of the Old Testament called by her name. Various opinions are held regarding the time and truth of the story, but it is judged by scholars of to-day as a romance, built upon some foundation of truth. The feast of Purim, which commemorates the events narrated, is still observed by the Jews during the month Adair. See ESTHER, BOOK OF, THE.