/ Dictionary / Index J Jagiello: Meaning and Definition of Find definitions for: Ja•giel•lo Pronunciation: (yä-gyel'ō), [key] — pl. -los. Jagello. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jaggy jaguar Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language