/ Dictionary / Index L locoweed: Meaning and Definition of Find definitions for: lo•co•weed Pronunciation: (lō'kō-wēd"), [key] — n. any of various leguminous plants of the genera Astragalus and Oxytropis, of the southwestern U.S. and Mexico, causing locoism in sheep, horses, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: locoweed (Thesaurus) loco supra citato* loc. primo cit Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language