pyrethrin
/paɪˈriːθrɪn/
noun
- A natural insecticide found in chrysanthemum flowers, used to kill or repel insects.
- The gardener sprayed pyrethrin on the roses to get rid of aphids.
- Many organic farmers use pyrethrin because it breaks down quickly in the environment.
- Pyrethrin is often found in household bug sprays for ants and flies.