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Webster 1913 Edition


Hairspring

Hair′springˊ

(-sprĭngˊ)
,
Noun.
(Horology)
The slender recoil spring which regulates the motion of the balance in a timepiece.

Definition 2024


hairspring

hairspring

English

Noun

hairspring (plural hairsprings)

  1. A spring, made of a coil of fine wire, that is used to regulate the movement of a balance wheel in a watch.

Derived terms

  • hairspring trigger