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Meaning of derris

der•ris

Pronunciation: (der'is), [key]
— n.
  1. any East Indian plant belonging to the genus Derris, of the legume family, esp. D. elliptica, the roots of which contain rotenone and are used as an insecticide.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
derringer derry