Elaterium n. : A cathartic substance obtained, in the form of yellowish or greenish cakes, as the dried residue of the juice of the wild or squirting cucumber (Ecballium agreste, formerly called Momordica Elaterium).

Example:


Taxonomy
fruit, Ecballium elaterium, drug, free encyclopedia, elaterin, juice, bitter taste, plant extract, stalk, British pharmacopeia, active principle, search, articles link, recent events, recruit, the Mediterranean, Extraction, cucmber.

Defination from the web:
Elaterium or elaterin is the name of a plant extract that is used as a purgative. ... It forms colorless scales which have a bitter taste, but it is highly inadvisable to taste either this substance or elaterium. ...