/ Dictionary / Index R Rapp: Meaning and Definition of Find definitions for: Rapp Pronunciation: (rap Ger. räp), [key] 1757–1847, U.S. religious preacher, born in Germany: leader of the Harmonists. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rap music Rappahannock Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language