Bar Mitzvah: Lit. son of the commandment. A boy who has achieved the age of 13 and is consequently obligated to observe the commandments. Also, a ceremony marking the fact that a boy has achieved this age.
Despite the legal drinking age, it usually involves an open bar.
Daven - Yiddish: Pray. Observant Jews daven three times a day, in addition to reciting blessings over many common activities.
The Halakha expresses concern that if while traveling one is required to take one's mind off of one's destination and business, one will be troubled over the time lost and will therefore not pray with proper devotion (kavanah). The proper course of action in any situation like this depends upon the time, the place, one's level of religious observance and one's ability to pray with a clear mind. (KosherTorah.com)Cache: Pronounced cash, a special high-speed storage mechanism. It can be either a reserved section of main memory or an independent high-speed storage device.