/ Dictionary / Index M matchlock: Meaning and Definition of Find definitions for: match•lock Pronunciation: (mach'lok"), [key] — n. an old form of gunlock in which the priming was ignited by a slow match. a hand gun, usually a musket, with such a lock. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: matchlock (Thesaurus) matchlist matchmaker Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language