/ Dictionary / Index P pentacle: Meaning and Definition of Find definitions for: pen•ta•cle Pronunciation: (pen'tu-kul), [key] — n. pentagram. a similar figure, as a hexagram. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pentacle (Thesaurus) pentachlorophenol pentad Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language