/ Dictionary / Index P peppergrass: Meaning and Definition of Find definitions for: pep•per•grass Pronunciation: (pep'ur-gras", -gräs"), [key] — n. any pungent plant belonging to the genus Lepidium, of the mustard family, used as a potherb or salad vegetable. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pepper game pepperidge Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language