Aconite

n. any of a number of plants having poisonous roots; dried poisonous roots of these plants

Aconite may refer to:Aconitum, a plant genus containing the monkshoodsWinter aconite, a plant in the genus Eranthis
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Aconite /ac·o·nite/ a poisonous substance from the dried tuberous root of Aconitum napellus, which contains aconitine and related alkaloids and [more]Aconite - Community and Resources

Noun
1. any of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowers
(hypernym) poisonous plant
(hyponym) monkshood, helmetflower, helmet flower, Aconitum napellus
(member-holonym) Aconitum, genus Aconitum

(n.)
The herb wolfsbane, or monkshood; -- applied to any plant of the genus Aconitum (tribe Hellebore), all the species of which are poisonous.
  

(n.)
An extract or tincture obtained from Aconitum napellus, used as a poison and medicinally.