/ Dictionary / Index M missile gap: Meaning and Definition of Find definitions for: mis'sile gap" Pronunciation: [key] a lag in one country's missile production relative to the production of another country. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. missileer missileman Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language