Butterweed definitions

bŭt'ər-wēd'
A succulent annual or biennial plant (Senecio glabellus) of the composite family, native to the eastern United States and having pinnately divided leaves and bright yellow flowers.
noun
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The horseweed.
noun
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Any wild plant with yellow flowers or soft leaves, as groundsel or horseweed.
noun
7
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Any of various herbaceous flowering plants in the genus Conyza.
noun
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Origin of butterweed