/ Dictionary / Index J jumprock: Meaning and Definition of Find definitions for: jump•rock Pronunciation: ( jump'rok"), [key] — n. any of several freshwater suckers of the genus Moxostoma, of the southeastern U.S. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jump pass jump rope Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language