/ Dictionary / Index L Leopold I: Meaning and Definition of Find definitions for: Leopold I Pronunciation: [key] 1640–1705, king of Hungary 1655–1705; emperor of the Holy Roman Empire 1658–1705. 1790–1865, king of Belgium 1831–65. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Leopold Leopold II Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language