/ Dictionary / Index C cornerback: Meaning and Definition of Find definitions for: cor•ner•back Pronunciation: (kôr'nur-bak"), [key] — n. Football. one of two defensive backs positioned in the secondary between the linebackers and safeties, responsible for covering the outside areas near the sidelines against end runs and pass plays. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cornerback (Thesaurus) corner Corner Brook Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language