/ Dictionary / Index P piece of exchange: Meaning and Definition of Find definitions for: piece' of exchange' Pronunciation: [key] a piece of plate armor for reinforcing or replacing a piece ordinarily used in a suit. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. piece of eight piecer Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language