swallowwort noun. ['swɒlǝʊwǝ:t] M16.
[from SWALLOW noun¹ + WORT noun¹.]
1. Any of various European plants constituting the genus Vincetoxicum (family Asclepiadaceae), the follicles of which suggest a swallow with outspread wings; esp. (more fully white swallowwort) V. hirundinaria, with whitish flowers, and (more fully black swallowwort) V. nigrum, with dark purple flowers. M16.

2. The greater celandine, Chelidonium majus, reputedly used by swallows to restore their sight. L16.

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