Definify.com
Webster 1913 Edition
Hairspring
Hair′springˊ
(-sprĭngˊ)
, Noun.
(Horology)
The slender recoil spring which regulates the motion of the balance in a timepiece.
Definition 2025
hairspring
hairspring
English
Noun
hairspring (plural hairsprings)
- 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