The American Heritage® Dictionary of the English Language, 4th Edition
n. See aconite.
n. A slender, erect, poisonous perennial herb (Aconitum napellus) native to northern Europe, having violet flowers and whose dried leaves and roots yield aconite.
n. Any of various poisonous plants, of the genus Aconitum, with blue or white flowers in the shape of a hood
n. The dried leaves or flowers of these plants formerly used as a source of medicinal alkaloids
the GNU version of the Collaborative International Dictionary of English
n. A plant of the genus Aconitum; aconite. See aconite.
The Century Dictionary and Cyclopedia
n. A plant of the genus Aconitum, especially A. Napellus. Also called friar's-cap, foxbane, helmet-flower, Jacob's-chariot, and wolf's-bane. See Aconitum and aconite.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a poisonous herb native to northern Europe having hooded blue-purple flowers; the dried leaves and roots yield aconite
Word Usage
"Water slipped by and beneath it, enough to send a trickle on down, but in the shade, a large, still pool had formed, and by its side long stalks of monkshood bent under the weight of their blue flowers."