/ Dictionary / Index M man lock: Meaning and Definition of Find definitions for: man' lock" Pronunciation: [key] an air lock serving as a decompression chamber for workers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. manlike manly Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language