/rohsh" hah shaw"neuh, -shah"-, heuh-, rawsh"/ ; Ashk. Heb. /rddohsh" hah shaw"neuh/ ; Seph. Heb. /rddawsh" hah shah nah"/
a Jewish high holy day that marks the beginning of the Jewish New Year, celebrated on the first and second days of Tishri by Orthodox and Conservative Jews and only on the first day by Reform Jews.
Also, Rosh Hashana, Rosh Hashonoh, Rosh Hashono .
[ 1840-50; rosh hashshanah lit., beginning of the year ]