/ Dictionary / Index C core barrel: Meaning and Definition of Find definitions for: core' bar"rel Pronunciation: [key] (in a core drill) a length of pipe for holding rock cores while they are being extracted from the drill hole. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. core corecipient Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language