/wayk"up'/ , n.
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 .
adj.
5. serving to wake one from sleep: Leave a wake-up call at the front desk.
6. serving to arouse or excite: a wake-up call on the problems of pollution.
[ 1835-45; n., adj. use of v. phrase wake up ]