monkshood

Noun

monkshood (countable and uncountable, plural monkshoods)

1. (countable) Any of various poisonous plants, of the genus Aconitum, with blue or white flowers in the shape of a hood.
   • In the shady retreat under the hill grew clusters of luxuriant ferns; the wild French willow stood proudly with its lofty crest of red and gorgeous flowers between the pebbles, but the sedate monk's hood lifted its head still higher and looked gloomily and wickedly down on it, while it nodded and...1886, Peter Christen Asbjø￵rnsen, translated by H.L. Brækstad, Folk and Fairy Tales, page 280

   Synonyms:

   aconite, wolfsbane

2. (uncountable) The dried leaves or flowers of these plants formerly used as a source of medicinal alkaloids.