What does watchspring mean?
Watchspring is a specialized noun in horology for the coiled elastic spring that stores energy and drives the gear train of a mechanical watch. In this sense it is essentially the watch's mainspring: as the spring gradually unwinds, its stored force is transmitted through the watch's mechanism, allowing the hands and other components to move. The word is mainly encountered in watchmaking, repair, and technical descriptions rather than ordinary conversation. It should not be confused with the hairspring, a much finer balance spring that helps regulate the watch's timing. The compound formation is transparent: a spring belonging to a watch. Because the term identifies both a physical component and its function, it remains useful in precise technical and museum contexts, even though many modern watches use quartz movements without such a mechanism.
nounA coiled elastic spring in a mechanical watch that stores energy and supplies the power to drive the watch's gear train.
- The coiled spring in a mechanical watch that stores and releases energy to drive the watch's mechanism.
"The watchmaker replaced the worn watchspring and restored the movement's power reserve."
"The watchmaker replaced the worn watchspring and restored the movement's power reserve."
"As the coiled watchspring slowly unwinds, it keeps the mechanical watch running."
The regular plural is used when referring to multiple springs of this type or when listing replacement parts.
"The repair shop stocks replacement watchsprings for older mechanical movements."
Tiny enough to hide inside a watch, the watchspring is the coiled powerhouse that keeps mechanical time moving.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of watchspring
Watchspring is an English compound formed by combining watch, in the sense of a mechanical timepiece, with spring, an elastic mechanism that stores and releases energy. Its formation is transparent and parallels related watchmaking terms such as watchmaker and watchmaking. The compound belongs to the vocabulary of mechanical horology and identifies the spring by the timepiece in which it functions.
How watchspring is actually used
This is a specialized horological term, chiefly encountered in watchmaking, repair, and technical descriptions rather than ordinary conversation. The open compound 'watch spring' also occurs.
Easily confused with watchspring
A watchspring provides the watch's driving power, whereas a hairspring is the fine balance spring that helps regulate the movement's timing.