/ Dictionary / Index P pestle: Meaning and Definition of Find definitions for: pes•tle Pronunciation: (pes'ul, pes'tl), [key] — n., v., -tled, -tling. —n. a tool for pounding or grinding substances in a mortar. See illus. under. any of various appliances for pounding, stamping, etc. —v.t. to pound or grind with or as if with a pestle. —v.i. to work with a pestle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pestle (Thesaurus) pestilential pesto Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language