1. Noun.  (botany) The herb wolfsbane, or monkshood; any plant of the genus ''Aconitum'', all the species of which are poisonous.
  2. Noun.  (poison) An extract or tincture obtained from ''Aconitum napellus'', used as a poison and medicinally.

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This entry was last updated on RefTopia from its source on 3/20/2012.