The golden shower or pudding-pipe tree, Cassia fistula (family Fabaceae (Leguminosae)); a drug made from the pulp surrounding the seeds of this plant, used as a laxative.
Origin
Late 17th century; earliest use found in John Ray (1627–1705), naturalist and theologian.
Definition of purging cassia in US English:
purging cassia
noun
The golden shower or pudding-pipe tree, Cassia fistula (family Fabaceae (Leguminosae)); a drug made from the pulp surrounding the seeds of this plant, used as a laxative.
Origin
Late 17th century; earliest use found in John Ray (1627–1705), naturalist and theologian.