Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A poisonous eastern North American plant (Ageratina altissima) in the composite family, having opposite, heart-shaped leaves and flat-topped clusters of small white flower heads.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun American herb having flat-topped clusters of small white flower heads; reputedly a cause of trembles and milk sickness; sometimes placed in genus Eupatorium
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