/ Dictionary / Index M mail carrier: Meaning and Definition of Find definitions for: mail' car"rier Pronunciation: [key] a person, usually employed by the post office, who delivers mail. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mail car mailcatcher Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language