/hair"spring'/ , n. Horol.
a fine, usually spiral, spring used for oscillating the balance of a timepiece. Also called balance spring .
[ 1820-30; HAIR + SPRING ]
/hair"spring'/ , n. Horol.
a fine, usually spiral, spring used for oscillating the balance of a timepiece. Also called balance spring .
[ 1820-30; HAIR + SPRING ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012