/ Dictionary / Index C coat of mail: Meaning and Definition of Find definitions for: coat' of mail' Pronunciation: [key] a long defensive garment made of interlinked metal rings; hauberk; byrnie. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coat of arms coat protein Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language