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

circa 1816

in the meaning defined above

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Medical Dictionary

butterfly weed

noun \ -ˌwēd \

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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