/ Dictionary / Index O OPruss: Meaning and Definition of Find definitions for: OPruss Pronunciation: [key] Old Prussian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. OPr opry 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