jal·ap (jăləp, jäləp)
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.
[French, from American Spanish jalapa, short for (purga de) Jalapa, (purgative of) Jalapa, after Jalapa.]
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