Dictionary

butterfly weed

noun

Definition of BUTTERFLY WEED

:  a North American milkweed (Asclepias tuberosa) with showy orange flowers borne on erect leafy stems

First Known Use of BUTTERFLY WEED

1816

butterfly weed

noun \-ˌwēd\   (Medical Dictionary)

Medical Definition of BUTTERFLY WEED

:  an orange-flowered milkweed of the genus Asclepias (A. tuberosa) of eastern North America that is a source of asclepias—called also pleurisy root

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