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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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Certainly a nicer way to wake up than our usual alarm clock! Rachael O'Connor, MSNBC Newsweek, 26 Nov. 2025 This minimalist alarm clock makes waking up a little easier—and cuter. Francesca Krempa, StyleCaster, 25 Nov. 2025 This alarm clock also comes with sleep sounds, so even the most noise-sensitive guest is guaranteed a sound sleep at your home—there are five sleep noises to choose from. Sophia Beams, Better Homes & Gardens, 22 Nov. 2025 My favorite Bali alarm clock—that golden morning glow—plays an especially important role. Stephanie Vermillion, Vogue, 12 Nov. 2025 See All Example Sentences for alarm clock

Word History

First Known Use

1662, in the meaning defined above

Time Traveler
The first known use of alarm clock was in 1662

Browse Nearby Words

Cite this Entry

“Alarm clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alarm%20clock. Accessed 28 Nov. 2025.

Kids Definition

alarm clock

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

More from Merriam-Webster on alarm clock

Last Updated: - Updated example sentences
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