/ Dictionary / Index C coll.: Meaning and Definition of Find definitions for: coll. Pronunciation: [key] collateral. collect. collection. collective. collector. college. collegiate. colloquial. (in prescriptions) an eyewash. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. colitis collab. Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language