/ Dictionary / Index C corer: Meaning and Definition of Find definitions for: cor•er Pronunciation: (kôr'ur, kōr'-), [key] — n. a person or thing that cores. a knife or other instrument for coring apples, pears, etc. a device having a hollow cylindrical drill or tube, used for taking samples of earth, rock, etc., from below the surface of the ground or ocean bottom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: corer (Thesaurus) corequisite corespondent Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language