coniine
noun
co·ni·ine ˈkō-nē-ˌēn 
: a poisonous alkaloid C8H17N found in poison hemlock
Example Sentences
Recent Examples on the Web The plant has a few toxic compounds, including coniine, g-coniceine, and piperidine alkaloids. 
Korin Miller, Health.com, 22 June 2021
Korin Miller, Health.com, 22 June 2021 Word History
Etymology
German Koniin, from Late Latin conium hemlock, from Greek kōneion
First Known Use
1831, in the meaning defined above
Medical Definition
coniine
noun
co·ni·ine ˈkō-nē-ˌēn
: a poisonous alkaloid C8H17N found in poison hemlock (Conium maculatum)