/ Dictionary / Index O orra: Meaning and Definition of Find definitions for: or•ra Pronunciation: (ôr'u, or'u), [key] — adj. Scot. not regular or scheduled; odd: orra work. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Orr orrery Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language