Wordnet 3.0
NOUN (1)
1. 
 the seventh month of the civil year; 
 the first month of the ecclesiastic year (in March and April); 
[syn: Nisan, Nissan]
WordNet (r) 3.0 (2006):
Nissan
    n 1: the seventh month of the civil year; the first month of the
         ecclesiastic year (in March and April) [syn: Nisan,
         Nissan]