- See under senna(def 2).
Origin of Tinnevelly senna
after Tinnevelly (Tirunelveli), town and district in Tamil Nadu state, India
- any plant, shrub, or tree belonging to the genus Cassia, of the legume family, having pinnate leaves and large clusters of flowers.
- any of various cathartic drugs consisting of the dried leaflets of certain of these plants, as one drug (Alexandrian senna) derived from C. acutifolia, or another (Tinnevelly senna) derived from C. angustifolia.
- wild senna.
Origin of senna
1535–45; < New Latin < Arabic sanā
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- Ayrton (ˈɛətən). 1960–94, Brazilian racing driver: world champion (1988, 1990, 1991)
- any of various tropical plants of the leguminous genus Cassia, esp C. angustifolia (Arabian senna) and C. acutifolia (Alexandrian senna), having typically yellow flowers and long pods
- senna leaf the dried leaflets of any of these plants, used as a cathartic and laxative
- senna pods the dried fruits of any of these plants, used as a cathartic and laxative
See also bladder senna
Word Origin for senna
C16: via New Latin from Arabic sanā
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
tropical shrub, 1540s, from Modern Latin senna, from Arabic sana. Earlier was sene (c.1400), from French.
Online Etymology Dictionary, © 2010 Douglas Harper