pyrethrum - definition, thesaurus and related words from WordNet-Online

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Noun pyrethrum has 4 senses

pyrethrum - made of dried flower heads of pyrethrum plants
--₁ is a kind of insecticide, insect powder
pyrethrum, Dalmatian pyrethrum, Dalmatia pyrethrum, Tanacetum cinerariifolium, Chrysanthemum cinerariifolium - white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum
--₂ is a kind of herb, herbaceous plant
--₂ is a member of Tanacetum, genus Tanacetum
painted daisy, pyrethrum, Tanacetum coccineum, Chrysanthemum coccineum - 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
--₃ is a kind of flower
--₃ is a member of Tanacetum, genus Tanacetum
Pyrethrum, genus Pyrethrum - used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
--₄ is a kind of asterid dicot genus
--₄ is a member of
Compositae, family Compositae, Asteraceae, family Asteraceae, aster family