/ Dictionary / Index J junk mail: Meaning and Definition of Find definitions for: junk' mail" Pronunciation: [key] unsolicited commercial mail. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. junk jewelry junk mailer Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language