/ Dictionary / Index C close-in: Meaning and Definition of Find definitions for: close-in Pronunciation: (klōs'in"), [key] — adj. near, as to a common center; adjacent, esp. to a city: The city is enveloping its close-in suburbs. occurring or provided at close quarters: Fighter planes provided daring close-in air support. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: close-in (Thesaurus) close helmet close juncture Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language