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Definitions

mainspring

[meyn-spring] / ˈmeɪnˌsprɪŋ /












Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Its hairspring, mainspring, ruby bearings and a few other parts were sourced from Switzerland.

From Los Angeles Times • May 22, 2023

That’s the mainspring tension of this six-month baseball thing.

From Washington Post • Aug. 14, 2019

That offensive prank is the mainspring of the movie.

From The New Yorker • Oct. 21, 2014

If true, Bicep’s detection of gravitational waves would confirm a theory that the universe began with a violent outward antigravitational swoosh known as inflation, the mainspring of Big Bang theorizing for the last three decades.

From New York Times • Sep. 22, 2014

“It’s how my father taught me. If I don’t wind it consistently, it won’t keep time as well. And if I overwind it, the mainspring might break.”

From "The City Beautiful" by Aden Polydoros