Advanced as in fountain A component, typically found in devices such as clocks or watches, that serves as the primary source of power, as in a fountain. Clear All
2 Example Sentences Showcasing the Meaning of 'Mainspring'
The watchmaker carefully examined the mainspring to ensure the proper functioning of the antique clock.
During the history lecture, the professor discussed the significance of the mainspring in revolutionizing timekeeping devices.
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