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derris

der·ris [ dérriss ] (plural der·ris·es)


noun 
Definition:
 
1. insecticide: an insecticide made from a tropical plant. It contains the natural toxin rotenone.

2. South Asian climbing plant: a woody climbing plant with a tuberous root that produces derris. Native to: South Asia.  Genus Derris.

[Mid-19th century. Via modern Latin< Greek, "leather covering"]
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