/ Dictionary / Index B banking pin: Meaning and Definition of Find definitions for: bank'ing pin" Pronunciation: [key] — Horol. Horol. either of two pins for damping or halting the oscillation, in either direction, of a balance or lever. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. banking account banking principle Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language