Aconitum n 1: genus of poisonous plants of temperate regions of northern hemisphere with a vaulted and enlarged petal [syn: {Aconitum}, {genus Aconitum}]
Aconitum \Ac`o*ni"tum\, n. [L. See {Aconite}.] The poisonous herb aconite; also, an extract from it. [1913 Webster] Strong As aconitum or rash gunpowder. --Shak. [1913 Webster]