Aconitum

noun
Ac·​o·​ni·​tum | \ ˌak-ə-ˈnīt-əm How to pronounce Aconitum (audio) \

Medical Definition of Aconitum

: a genus of poisonous herbs (family Ranunculaceae) found in temperate regions and having palmately divided leaves and very irregular blue, purple, or yellow flowers — see monkshood, wolfsbane