/ Dictionary / Index O oleo oil: Meaning and Definition of Find definitions for: o'leo oil" Pronunciation: [key] a product obtained from beef fat and consisting chiefly of a mixture of olein and palmitin, used for making butterlike foods. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oleomargarine oleophilic Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language