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.
Looming over camp, Black Brushy Mountain was outlined by the early morning glow when the alarm clock rattled me from a sound sleep. Tim Kelly, Outdoor Life, 4 Sep. 2025 Waking up to Mediterranean breezes instead of alarm clocks. Essence, 1 Sep. 2025 Ignoring your alarm clock will become a daily happening bordering on the opulent. Stacia Datskovska, Footwear News, 21 Aug. 2025 Stories of haughty people scheming and plucky servants improving alarm clocks attract smaller audiences than, say, trench warfare. Elle Carroll, Vulture, 11 Aug. 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 6 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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