/ Dictionary / Index C coach box: Meaning and Definition of Find definitions for: coach' box" Pronunciation: [key] the seat for the driver of a coach or carriage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coach-and-four coach dog Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language