/ Dictionary / Index R regr.: Meaning and Definition of Find definitions for: regr. Pronunciation: [key] registrar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. regorge regrate Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language