/ Dictionary / Index P pumice: Meaning and Definition of Find definitions for: pum•ice Pronunciation: (pum'is), [key] — n., v., -iced, -ic•ing. —n. Also calleda porous or spongy form of volcanic glass, used as an abrasive. —v.t. to rub, smooth, clean, etc., with pumice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pumice (Thesaurus) pumelo pummel Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language