alarm clock

noun

Synonyms of alarm clocknext
: 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.
Which sunrise alarm clocks are best? Bestreviews, Chicago Tribune, 15 June 2026 After Knutson’s murder, investigators discovered that the roommates were allegedly getting into arguments over alarm clocks and pet fish. Caroline Blair, PEOPLE, 4 June 2026 Even within the walls of the apartment, there was the hum of the refrigerator, the soft ticking of a radio alarm clock and the clock in the VCR, the submarine tlack of the cassette reversing in the answering machine, and other little noises. Wyatt Williams, Harpers Magazine, 2 June 2026 In addition, comfortable sneakers, portable steamers, and the Hatch alarm clock were big hits among our readers. Meaghan Kenny, Condé Nast Traveler, 2 June 2026 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 19 Jun. 2026.

Kids Definition

alarm clock

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

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