Definition of strychnine noun from the Oxford Advanced Learner's Dictionary

 

strychnine

 noun
noun
BrE BrE//ˈstrɪkniːn//
 
; NAmE NAmE//ˈstrɪkniːn//
 
[uncountable]
 
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a poisonous substance used in very small amounts as a medicine Word Origin early 19th cent.: from French, via Latin from Greek strukhnos, denoting a kind of nightshade.
See the Oxford Advanced American Dictionary entry: strychnine