Definitions for jalapˈdʒæl əp, ˈdʒɑ ləp
Random House Webster's College Dictionary
jal•apˈdʒæl əp, ˈdʒɑ ləp(n.)
the dried tuberous root of any of several plants, esp. Exogonium purga, of the morning glory family, or the powder derived from it, used in medicine chiefly as a purgative.
any of these plants.
Origin of jalap:
1665–75; < MF < Sp (purga de) Jalapa purgative from Jalapa
A cathartic drug consisting of the tuberous roots of Ipomoea purga, a convolvulaceous plant found in Mexico.
Origin: From the city of Xalapa in Mexico.
the tubers of the Mexican plant Ipomoea purga (or Exogonium purga), a climber much like the morning-glory. The abstract, extract, and powder, prepared from the tubers, are well known purgative medicines. Other species of Ipomoea yield several inferior kinds of jalap, as the I. Orizabensis, and I. tuberosa