pyrethrum

(noun)

noun

1. made of dried flower heads of pyrethrum plants

Definition categories: plant, insecticide

2. white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum

Definition categories: plant, herb

3. spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum

Definition categories: plant, flower

4. used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum

Definition categories: plant