Definition of cynanchum
1 capitalized : a genus of twining vines (family Asclepiadaceae) with opposite hanging leaves, small greenish or purplish flowers, and long smooth pods
2 plural -s : the roots of several vines of the genus Cynanchum formerly used as an emetic
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Origin and Etymology of cynanchum
New Latin, from Greek kynanchon dogbane (Marsdenia erecta), from kyn- cyn- + -anchon (from anchein to choke) — more at anger
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