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Alarm clock
01
a clock that can be set to an exact time to make a sound and wake someone up
Example
The alarm clock has a backup battery in case of a power outage.
I always set multiple alarms on my alarm clock to ensure I wake up.
I put my alarm clock across the room to force myself to get out of bed.
I need to replace the broken alarm clock with a new one.
She tapped the alarm clock to silence the beeping noise.
