black swallow-wort

noun

: a European perennial twining herb (Cynanchum nigrum) that is occasionally cultivated and sometimes escaped in North America and has purple-brown or dark purple flowers with triangular ovate petals

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Cite this Entry

“Black swallow-wort.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/black%20swallow-wort. Accessed 15 Apr. 2024.

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