noun Date: 1790 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, a coarse annual North American ragweed ( Ambrosia trifida )
HORSEWEED
Meaning of HORSEWEED in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012