[1] : WordNet (r) 2.0

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
see also:
dalmatian pyrethrum dalmatia pyrethrum tanacetum cinerariifolium chrysanthemum cinerariifolium painted daisy tanacetum coccineum 
chrysanthemum coccineum genus pyrethrum 

Pyrethrum >> P Words
Pyrethrum, definition of term: Pyrethrum
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