wake-up call

1. A warning to take action concerning something that was overlooked or neglected (synset 107239141)
   "the bombing was a wake-up call to strengthen domestic security"
   is a type of: warning - a message informing of danger
2. A telephone call that you request be made a specific time in order to wake you up at that time (especially in hotels) (synset 106285199)
   "she left a wake-up call for 7 a.m."
   is a type of: call, phone call, telephone call - a telephone connection

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