Derrises

der;ris pronunciation: function: noun etymology: new latin, genus name, from greek, skin, from derein to skin — more at teardate: 1919 1 : a preparation chiefly of ground derris roots used as an insecticide2 : any of a large genus (derris) of tropical eurasian shrubs and woody vines of the legume family including sources of poisons and especially commercial sources of rotenone