senna
/ˈsɛnə/ noun, proper noun
Forms sennas
- 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.
- noun (uncountable) The dried leaves or pods of these plants (especially of Senna alexandrina, syn. Cassia angustifolia or Cassia acutifolia), used medicinally.
- noun (medicine) Senna glycoside, a laxative.
- proper noun A surname from Italian.
Etymology
From Arabic سَنَا (sanā, “senna”).
Borrowed from Italian Senna; this surname is predominantly attested in Brazil, however it is not of Portuguese origin.
Webster’s 1913
- noun The leaves of several leguminous plants of the genus Cassia.
- noun The plants themselves, native to the East, but now cultivated largely in the south of Europe and in the West Indies. Bladder senna.
Etymology [Cf. It. & Sp. sena, Pg. sene, F. séné; all fr. Ar. sana.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “senna”, CC BY-SA 4.0. Details