/ Dictionary / Index B balance spring: Meaning and Definition of Find definitions for: bal'ance spring" Pronunciation: [key] — Horol. Horol. hairspring. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. balance sheet balance staff Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language