| 1. | an interruption or failure in the supply of power, esp. electricity. |
| 2. | the period during which power is lost: a two-hour outage on the East Coast. |
| 3. | a stoppage in the functioning of a machine or mechanism due to a failure in the supply of power or electricity. |
| 4. | the quantity of goods lost or lacking from a shipment. Compare innage (def. 1). |
| 5. | Aeronautics. the amount of fuel used during a flight. Compare innage (def. 2). |