monkshood n 1: a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite [syn: {monkshood}, {helmetflower}, {helmet flower}, {Aconitum napellus}]
Monkshood \Monks"hood`\, n. (Bot.) A plant of the genus {Aconitum}; aconite. See {Aconite}. [1913 Webster]