| 1. | an act or instance of waking up. |
| 2. | an act or instance of being awakened: I asked the hotel desk for a wake-up at 6. |
| 3. | a time of awaking or being awakened: I'll need a 5 o'clock wake-up to make the early plane. |
| 4. | flicker 2 . |
| 5. | serving to wake one from sleep: Leave a wake-up call at the front desk. |
| 6. | serving to arouse or alert: a wake-up call on the problems of pollution. |
