What is the meaning of Aconitum?

The poisonous herb aconite; also, an extract from it.

Aconitum, a genus of plants in the family Ranunculaceae.

Any of the poisonous plants of the genus Aconitum; wolfsbane, monkshood, aconite.

A poison made from the poisonous plants of the genus Aconitum.

Source: wiktionary.org