The Collaborative International Dictionary of English v.0.48:
Elul \E"lul\, n. [Heb.] The sixth month of the Jewish year, by the sacred reckoning, or the twelfth, by the civil reckoning, corresponding nearly to the month of September. [1913 Webster]WordNet (r) 3.0 (2006):
Elul n 1: the twelfth month of the civil year; the sixth month of the ecclesiastical year in the Jewish calendar (in August and September) [syn: Elul, Ellul]