pyrethrum

Noun

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

• 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

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

• made of dried flower heads of pyrethrum plants

Related words

• Synonyms: 
  Pyrethrum , genus Pyrethrum , painted daisy , Tanacetum coccineum , Chrysanthemum coccineum , Dalmatian pyrethrum , Dalmatia pyrethrum , Tanacetum cinerariifolium , Chrysanthemum cinerariifolium