Dictionary

horseweed

noun horse·weed \ˈhrs-ˌwēd\

Definition of HORSEWEED

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
:  a coarse annual North American ragweed (Ambrosia trifida)

First Known Use of HORSEWEED

1790

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