alarm clock

noun

: a clock that can be set to sound an alarm at a desired time

Examples of alarm clock in a Sentence

She set the alarm clock for six o'clock.

The alarm clock went off at six o'clock.

Recent Examples on the Web

One last early wake-up call Set those alarm clocks one more time! — Andy Scholes, CNN Money, 12 Nov. 2026

Give the chronic snoozer in your life a gentler way to wake up with this clever alarm clock. — Jeaneen Russell, PEOPLE, 28 Oct. 2026

The alarm clock uses ultrasound to track breathing and improve sleep. — J.d. Capelouto, semafor.com, 28 Oct. 2026

That buzz could last a few days, which will come in handy when that alarm clock rings. — Patricia Babcock McGraw Outkick, FOXNews.com, 27 Oct. 2026

Word History

First Known Use

1662, in the meaning defined above

Rhymes for alarm clock

• aftershock
• antiknock
• arawak
• hollyhock
• interlock
• manioc
• shuttlecock
• tomahawk
• weathercock
• alcock
• beanstalk
• bedrock

Kids Definition

alarm clock

noun

: a clock that can be set to sound an alarm at any desired time