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
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Other crucial plot developments have involved the reveal that a French chef wasn’t actually French, a plucky servant’s attempts to patent an alarm clock, and Agnes’s dramatic decision to cross the street in order to speak to the Russells in person. Jackson McHenry, Vulture, 17 June 2025 Our yards are in bloom, the worst of the summer heat hasn’t quite kicked in yet, and the promise of a summer without lunch boxes, homework, and early-morning alarm clocks is upon us. Patricia Shannon, Southern Living, 16 May 2025 And now, its five-color drop is blessing us all with a new excuse to snooze our alarm clocks. Stacia Datskovska, Footwear News, 3 June 2025 Exactly 100 percent of US imports for some very common household items — including hair curlers, ultrasonic humidifiers, alarm clocks, and yes, electric toasters — come from China, according to data from the US Census Bureau. Adam Clark Estes, Vox, 17 Apr. 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

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Cite this Entry

“Alarm clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alarm%20clock. Accessed 1 Jul. 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

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