/ Dictionary / Index O Osceola: Meaning and Definition of Find definitions for: Os•ce•o•la Pronunciation: (os"ē-ō'lu, ō"sā-), [key] — n. 1804–38, U.S. Indian leader: chief of the Seminole tribe. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Oscar II oscillate Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language