Dictionary
butterfly weed
noun
Definition of BUTTERFLY WEED
: a North American milkweed (Asclepias tuberosa) with showy orange flowers borne on erect leafy stems
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First Known Use of BUTTERFLY WEED
1816
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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