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1. A telephone call that one requests to occur at a specific time in order to be woken up, especially in a hotel.
2. A sign or warning that alerts one to negative or dangerous behavior or circumstances: "Her personal life was spiraling out of control ... and her brush with death came as a wake-up call" (Geraldine Fabrikant).
1. (Telecommunications) a telephone call that wakes a person from sleep
2. an event that alerts people to a danger or difficulty
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|Noun||1.||wake-up call - a warning to take action concerning something that was overlooked or neglected; "the bombing was a wake-up call to strengthen domestic security"|
warning - a message informing of danger; "a warning that still more bombs could explode"
|2.||wake-up call - a telephone call that you request be made a specific time in order to wake you up at that time (especially in hotels); "she left a wake-up call for 7 a.m."|