horse balm

horse balm

noun
a lemon-scented plant, Collinsonia canadensis, of eastern North America, having small yellow flowers.
Also called horseweed, richweed.


Origin:
1780–90, Americanism

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
horse balm

noun
erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States 
WordNet® 3.0, © 2006 by Princeton University.
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