/ Dictionary / Index C coin box: Meaning and Definition of Find definitions for: coin' box" Pronunciation: [key] a locked container or receptacle for holding coins deposited in a pay telephone, pinball machine, turnstile, or other coin-operated machine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coinage bronze coin changer Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language