/ Dictionary / Index P peanut oil: Meaning and Definition of Find definitions for: pea'nut oil" Pronunciation: [key] a yellow to greenish oil expressed or extracted from peanuts, used in cookery, as a vehicle for medicines, and in the manufacture of margarine and soap. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. peanut heaven peanut worm Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language