English dictionary
hairspring
/'h/(@)/r,spr/I//N/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
-
a fine spiral spring that regulates the movement of the balance wheel in a timepiece
Source: WordNet 3.0
-
The slender recoil spring which regulates the motion of the balance in a timepiece.
Source: webster1913