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alarm clock

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noun
  1. a clock with a bell or buzzer that can be set to sound at a particular time, as to awaken someone.
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Origin of alarm clock

First recorded in 1690–1700
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for alarm clock

Historical Examples

  • She did not say "charrmed" like an alarm-clock breaking out.

    In a Little Town

    Rupert Hughes

  • One of his sounds or calls is like the buzz of a reel or the whirr of an alarm-clock.

  • He was fast being pounded to a pulp when the alarm-clock went off.

    Jim Spurling, Fisherman

    Albert Walter Tolman

  • Then she went and set her alarm-clock to a quarter to seven in the morning.

  • Then I'm going to go and get an alarm-clock that belongs to me.

    The Jack-Knife Man

    Ellis Parker Butler


British Dictionary definitions for alarm clock

alarm clock

noun
  1. a clock with a mechanism that sounds at a set time: used esp for waking a person up
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012