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The dried tuberous root of Exogonium purga, E. jalapa, or Ipomoea purga (family Convolvulaceae); used as a cathartic.
[Jalapa or Xalapa, a Mexican city from which the drug was exported]
Farlex Partner Medical Dictionary © Farlex 2012
1. A twining eastern Mexican vine (Ipomoea purga) having tuberous roots that are dried, powdered, and used medicinally as a purgative.
2. The purgative drug obtained from the roots of this plant or related plants.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.