1
: the inner workings of something
2
: the machinery (such as springs and a train of gears) that run a clock
also : a similar mechanism running a mechanical device (such as a toy)
3
: the precision, regularity, or absence of variation associated with a clock or clockwork
a clockwork operation
used in the phrase like clockwork to describe something that happens or works in a regular and exact way
This type of star has a wonderful property: Its brightness waxes and wanes like clockworkRon Cowen
If everything went like clockwork, it would have taken a year to get items in stores.Brooks Barnes

Examples of clockwork in a Sentence

the clockwork inside a mechanical toy soldier
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.
The city buses run like clockwork and are much beloved and utilized by residents. Marti Buckley, Condé Nast Traveler, 3 Aug. 2026 Like clockwork, the first customer appears before the sign stops swinging from its chain. Tom Campbell, New York Times, 1 Aug. 2026 Every day, like clockwork, the tree shares a nectar perfectly suited to keep its hungry ants happy. Will Cady, SPIN, 30 July 2026 Most of the credit for that belongs to the intricate clockwork of drone factories, start-ups, software developers, training academies, and military innovators that help keep the Ukrainian war machine running. Simon Shuster, The Atlantic, 24 July 2026 See All Example Sentences for clockwork

Word History

First Known Use

1628, in the meaning defined at sense 1

Time Traveler
The first known use of clockwork was in 1628

Browse Nearby Words

Cite this Entry

“Clockwork.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/clockwork. Accessed 5 Aug. 2026.

Kids Definition

: machinery (as in a mechanical toy) containing a set of small cogwheels

More from Merriam-Webster on clockwork

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!