What does pyrethrum mean?

pyrethrum in AZ Dictionary

(n) some of a number of old-world plants regarding the genus Chrysanthemum, particularly C. coccineum, cultivated for their showy flower heads.
(n) An insecticide produced from the dried flower heads of Chrysanthemum cinerariifolium or C. coccineum.
(n) any one of several perennial African flowers associated with the genus Chrysanthemum, particularly Chrysanthemum cinerariaefolium

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    • insect powder, insecticide, herbaceous plant, Herb, asterid dicot genus
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    • Malathion, premix, spinosad, talcum, fungicide
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