Definition of Adar Rishon
: the intercalary month of the Jewish calendar that precedes Adar Sheni in leap years — see month table
Origin and Etymology of adar rishon
Hebrew Ădhār Ri'shon first Adar
First Known Use: 1834
Seen and Heard
What made you want to look up Adar Rishon? Please tell us where you read or heard it (including the quote, if possible).