Definition & Meaning of "wake-up call"

What is a "wake-up call"?

A wake-up call is a service provided by hotels or businesses to alert guests at a specified time, usually to ensure they wake up for a particular event or appointment. The service involves a staff member or automated system calling the guest’s room at the designated time, often in the morning. Wake-up calls are typically requested when checking into a hotel and can be set for a specific time. Some phone systems or mobile apps also offer similar features to help individuals wake up by setting alarms or reminders.