from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various plants of the genus Cassia, having pinnately compound leaves and showy, nearly regular, usually yellow flowers.
- n. The dried leaves of Cassia angustifolia or C. acutifolia, used medicinally as a laxative.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
- n. The dried leaves or pods of these plants (especially of Cassia angustifolia or Cassia acutifolia) used medicinally.
New Latin, from Arabic sanā; akin to Aramaic sanyā, a thorn-bush.(American Heritage® Dictionary of the English Language, Fourth Edition)