bitterweed

noun bit·ter·weed \ ˈbi-tər-ˌwēd \

Definition of bitterweed

: any of several American plants containing a bitter substance: such as
a : either of two ragweeds:
(1) : a low-growing common ragweed (Ambrosia artemissiifolia)
(2) : horseweed
b : an annual yellow-flowered sneezeweed (Helenium amarum synonym H. tenuifolium)
c : an erect annual composite herb (Hymenoxys odorata) of the southwestern U.S. that has yellow flowers and is poisonous to livestock

First Known Use of bitterweed

1819


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