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.
Every room features flat-screen LCD televisions, floor-to-ceiling windows, an alarm clock radio with MP3 connectivity, and a safe and 24-hour room service. Charlie Vargas, Oc Register, 19 Sep. 2025 The gentle sunrise alarm light is a calming wake-up rather than a loud and repetitive alarm clock. Julia Harrison, Architectural Digest, 19 Sep. 2025 That's when the alarm clock rings. Ryan Canfield, FOXNews.com, 19 Sep. 2025 No Bible, no book of devotion, no alarm clock marred the worldly charm of her bedside table. Literary Hub, 15 Sep. 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 29 Sep. 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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