/ Dictionary / Index W witch grass: Meaning and Definition of Find definitions for: witch' grass" Pronunciation: [key] a panic grass, Panicum capillare, having a bushlike compound panicle, common as a weed in North America. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: witchgrass (Thesaurus) witchetty grub witch hazel Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language