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 of extra light might include the glow of a face-up smartphone, radiance from a digital alarm clock or light pollution from outside. — Sandee Lamotte, CNN Money, 9 Sep. 2026

The company has already shared videos showing its latest smartphone used as a bedside alarm clock and a gaming device. — Bryan Hood, Robb Report, 9 Sep. 2026

Sunlit suites feature perks like rainfall showers, reading nooks, and smart Loftie alarm clocks while its in-house cafe serves up superfood smoothies and grain bowls for health-conscious travelers. — Lori Keong, Architectural Digest, 7 Sep. 2026

There was no need for an alarm clock this morning to get me up and rolling with another edition of Friday Screencaps. — Joe Kinsey Outkick, FOXNews.com, 4 Sep. 2026

Word History

First Known Use

1662, in the meaning defined above

Rhymes for alarm clock

• aftershock
• antiknock
• arawak
• hollyhock
• interlock
• manioc
• shuttlecock
• tomahawk
• weathercock
• alcock
• beanstalk
• bedrock

Kids Definition

alarm clock

noun

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