/ Dictionary / Index J joint return: Meaning and Definition of Find definitions for: joint' return' Pronunciation: [key] a U.S. income-tax return reporting the combined income of a married couple. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jointress joint runner Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language