Found 1 items, similar to pyrethrum.
English → English (WordNet) Definition: pyrethrum pyrethrum n 1: made of dried flower heads of pyrethrum plants 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 [syn: Dalmatian pyrethrum , Dalmatia pyrethrum, Tanacetum cinerariifolium , Chrysanthemum cinerariifolium] 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 [syn: painted daisy, Tanacetum coccineum , Chrysanthemum coccineum] 4: used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum [syn: genus Pyrethrum]