/ Dictionary / Index C collection agency: Meaning and Definition of Find definitions for: collec'tion a"gency Pronunciation: [key] a firm that collects unpaid bills for other firms and is usually compensated by receiving a percentage of the amount collected. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. collection collection box Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language