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horseweed

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noun horse·weed \ˈhȯrs-ˌwēd\

Definition of horseweed

  1. 1 :  a common annual American composite herb (Conyza canadensis syn. Erigeron canadensis) with an erect usually hairy stem and small discoid heads of yellow disk flowers

  2. 2 :  a coarse annual North American ragweed (Ambrosia trifida)




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