/ Dictionary / Index U Unser: Meaning and Definition of Find definitions for: Un•ser Pronunciation: (un'sur), [key] — n. (Al), born 1939, and his brother(Bobby), born 1934, U.S. racing-car drivers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unsell unset Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language