/ Dictionary / Index C co-boss: Meaning and Definition of Find definitions for: co-boss Pronunciation: (ku-bôs', -bos', kō-), [key] — interj. Chiefly Northern U.S. (used to summon cows from the pasture.) Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. COBOL Cobourg Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language