בר מצווה

Etymology
From and ; hence literally “of the age of commandment”. Originally designated the man of age, then the ceremony marking that age, then the teen having said ceremony.

Noun

 * 1) A bar mitzvah; a male Jew who is at least thirteen years old, and therefore considered old enough to be held responsible for following most of Jewish law.
 * 2) A bar mitzvah; a ceremony marking a male Jew's first aliyah to read the Torah after his thirteenth birthday.
 * 3) A bar mitzvah; a male Jew who has just turned thirteen and is having or has just had a bar mitzvah ceremony.