/ Dictionary / Index J jolly jumper: Meaning and Definition of Find definitions for: jol'ly jump'er Pronunciation: [key] — Naut. Naut. any light sail set above a skysail; flying kite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jolly boat Jolly Roger 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