Aconitine is a toxin produced by the Aconitum plant, also known as devil’s helmet or monkshood. Monkshood is very notorious for its toxic properties. In China, aconitine is also used as a herbal medicine against pain. ==Uses== Aconitine was previously used as an antipyretic and analgesic and still has some limited application in herbal medicine ...
• (n.) An intensely poisonous alkaloid, extracted from aconite.
(ә-kon´ĭ-tin) a poisonous alkaloid, the active principle of aconite.
A·con'i·tine noun (Chemistry) An intensely poisonous alkaloid, extracted from aconite. 
Type: Term Pronunciation: ă-kon′i-tēn Definitions: 1. The exceedingly poisonous active principle (diterpene alkaloid) of Aconitum sp. and Delphinium sp., formerly used as a cardiac sedative and applied externally for neuralgia.
Aconitine is an alkaloid extracted from monk's-hood and some other species of aconite. It is used medicinally, though it is a virulent poison.