WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. poisonous Eurasian perennial herb with broad rounded leaves and yellow flowers and fibrous rootstock
Word Usage
"It starts promisingly enough, with the gypsy Maleva's famous quatrain from the original: "Even a man who is pure in heart/And says his prayers by night/May become a wolf when the wolfbane blooms/And the autumn moon is bright.""