strychnine
strych·nine
noun \ˈstrik-ˌnīn, -nən, -ˌnēn\Definition of STRYCHNINE
: a bitter poisonous alkaloid C21H22N2O2 that is obtained from nux vomica and related plants of the genus Strychnos and is used as a poison (as for rodents) and medicinally as a stimulant of the central nervous system
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