Absent Without Official Leave: A term used in the United States Military to describe a soldier or other military member who has left his or her post without permission (usually in disagreement with a particular order). This is one of many military terms that has trickled down into everyday speech among civilian populations.
Private Johnson went AWOL after he received an order to join major combat forces in Iraq.
1. Absent Without (Official) Leave. This is a term used by the military to describe the status of a soldier. It is now also used by civilians as a term to describe anyone who has taken off or is missing.
2. Alcohol Without Liquid. This is a machine which allows users to inhale vaporized alcohol mixed with oxygen through a tube instead of drinking an alcoholic beverage.
Did you hear about ODB? He's supposed to be in rehab, but he went AWOL.
Absence without leave. A term that USED to be used in the military to mean not being at your post or duty station at the required time. Civilians still use the term but the military uses the term UA (Unauthorized Absence) now.
Civilians still say AWOL but we use UA in the military.