/ Dictionary / Index B balance staff: Meaning and Definition of Find definitions for: bal'ance staff" Pronunciation: [key] — Horol. Horol. a pivoted axle or shaft on which the balance is mounted. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. balance spring balance wheel 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