1. (n.)locoweed any of various leguminous plants of the genera Astragalus and Oxytropis, of the southwestern U.S. and Mexico, causinglocoism in sheep, horses, etc.
Etymology: (1875–80, Amer.)
Definition of 'locoweed'
Princeton's WordNet
1. (noun)locoweed, crazyweed, crazy weed any of several leguminous plants of western North America causing locoism in livestock
2. (noun)pot, grass, green goddess, dope, weed, gage, sess, sens, smoke, skunk, locoweed, Mary Jane street names for marijuana
Definitions of locoweed 
