scammony

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scam·mo·ny

(skam'ŏ-nē),
The plant, Convolvulus scammonia (family Convolvulaceae), the dried root of which contains a cathartic resin.
See also: ipomea.
[G. skammōnia]

scammony

(skăm′ə-nē)
n. pl. scammo·nies
1.
a. An eastern Mediterranean plant (Convolvulus scammonia) having large roots that yield a resin formerly used as a cathartic.
b. A Mexican plant (Ipomoea orizabensis) yielding a similar resin.
2. A cathartic preparation obtained from these resins.