pyrethrum

noun3

1. •
   Any of several daisy-like perennial African plants of the genus Tanacetum, especially Tanacetum cinerariifolium.

   • We children would re-tell the stories the following day to other children who worked in the fields picking the pyrethrum flowers, tea-leaves or coffee beans of our European and African landlords. — 1986
2. •
   Anacyclus pyrethrum (pellitory of Spain)
3. •
   Any of several insecticides obtained from these plants; pyrethrin.