/ Dictionary / Index P peanut butter: Meaning and Definition of Find definitions for: pea'nut but"ter Pronunciation: [key] a paste made from ground roasted peanuts, used as a spread or in cookery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. peanut peanut gallery Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language