senna

  1. Noun.  (countable) Any of several plants of the tribe ''Cassieae'', especially those of the genera ''Cassia'' and ''Senna'', whose leaves and pods are used as a purgative and laxative.
  2. Noun.  (uncountable) The dried leaves or pods of these plants (especially of ''Cassia angustifolia'' or ''Cassia acutifolia'') used medicinally.

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This entry was last updated on RefTopia from its source on 3/20/2012.