locoweed

/ˈloʊkoʊˌwid/
noun
  1. A plant of the pea family, found in western North America, that contains toxins causing neurological damage in livestock that eat it.
    • The bright purple flowers of locoweed are beautiful but dangerous to horses.
    • Cattle that graze on locoweed can become disoriented and uncoordinated.
    • Ranchers in the Rockies watch carefully for patches of locoweed on their land.
Synonyms
What does "locoweed" mean? | whatsthatwordmean | whatsthatwordmean