/ Dictionary / Index W worm grass: Meaning and Definition of Find definitions for: worm' grass" Pronunciation: [key] the pinkroot, Spigelia marilandica. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. worm gear wormhole Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language