/ Dictionary / Index W weed-killer: Meaning and Definition of Find definitions for: weed-kill•er Pronunciation: (wēd'kil"ur), [key] — n. a herbicide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: weed-killer (Thesaurus) weeder weedy Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language