/ Dictionary / Index O OSP: Meaning and Definition of Find definitions for: OSP Pronunciation: [key] he died without issue. OSp Pronunciation: [key] Old Spanish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Osorno osprey Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language