henbane

/hɛnbeɪn/
noun
  1. A poisonous plant with sticky leaves and yellow-brown flowers, used in small amounts in traditional medicine.
    • The witch in the story brewed a potion with henbane and other herbs.
    • Farmers often remove henbane from fields because it is toxic to livestock.
    • Henbane has been used for centuries as a sedative, but it can be dangerous if misused.