/ Dictionary / Index L Louis IV: Meaning and Definition of Find definitions for: Louis IV Pronunciation: [key] (“the Bavarian”) 1287?–1347, king of Germany (1314–47); emperor of the Holy Roman Empire 1328–47. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Louis II Louis V Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language