/ Dictionary / Index J jump ball: Meaning and Definition of Find definitions for: jump' ball" Pronunciation: [key] — Basketball. Basketball. a ball tossed into the air above and between two opposing players by the referee in putting the ball into play. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jump jump bid Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language