rotenone
/ˈroʊtənoʊn/
noun
- A natural substance used as an insecticide and to kill fish, made from the roots of certain plants.
- Farmers used rotenone to protect their crops from pests.
- Rotenone is toxic to fish and is sometimes used to manage invasive species in lakes.
- The gardener avoided rotenone because it can also harm beneficial insects.