| pyrethrum | used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum |
|---|---|
| pyrethrum | spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers |
| pyrethrum | white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below |
| pyrethrum | made of dried flower heads of pyrethrum plants |