除虫 chúchóng to exterminate insects Origin Definitions Defs Strokes Stroke Words Sentences Sents 除虫菊 chúchóngjú pyrethrum A perennial herb with gray-green leaves and white or red flowers; the dried flowers are ground into powder to kill pests like mosquitoes and lice.除虫剂 chúchóngjì insecticide insecticide; pesticide; disinfestant