/ Dictionary / Index C coin lock: Meaning and Definition of Find definitions for: coin' lock" Pronunciation: [key] a lock that is opened by the insertion of a coin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coinheritance coin machine Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language