noun
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the plant Acoitum napellus of Ranunculaceae family.
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the herbaceous plant Aconitum napellus of the same family.
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the poisonous perennial herb Aconitum ferox of the same family, from which aconitine is made and used as depressant; Indian aconite; monkshood.
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a rapidly acting poisonous drug usu. made from the dried roots of these plants; aconite.