Aconite \Ac"o*nite\, n. [L. aconitum, Gr. ?: cf. F. aconit.]

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

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

Winter aconite, a plant (Eranthis hyemalis) allied to the aconites.

Source: Webster's Revised Unabridged Dictionary (1913)