\Ni"san\, n. [Heb. n[=i]s[=a]n.] The first month of the jewish ecclesiastical year, formerly answering nearly to the month of April, now to March, of the Christian calendar. See {Abib}.
month of flowers, (Neh. 2:1) the first month of the Jewish sacred year. (See ABIB.) Assyrian nisannu, "beginning."