/ Dictionary / Index U UNRRA: Meaning and Definition of Find definitions for: UNRRA Pronunciation: (un'ru), [key] United Nations Relief and Rehabilitation Administration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. unrove unruffle Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language