/ Dictionary / Index S self-mailer: Meaning and Definition of Find definitions for: self-mail•er Pronunciation: (self'mā'lur), [key] — n. an advertisement, booklet, or the like, that has space for a name, address, and postage and can be mailed without a wrapper or envelope. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. self-made self-mastery Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language