- any of a genus (Cassia) of plants of the caesalpinia family, with finely divided leaves and yellow flowers
- the dried leaflets of various sennas, used, esp. formerly, as a laxative
Origin of sennaMedieval Latin sene from Arabic san?
- Any of various plants in the pea family, chiefly of the genera Senna and Chamaecrista, having pinnately compound leaves and showy, nearly regular, usually yellow flowers, used as ornamentals and for medicinal purposes.
- A preparation of the dried leaves of Senna alexandrina, used as a laxative.
Origin of sennaNew Latin from Arabic sanā Aramaic sanyā a thorn-bush
(countable and uncountable, plural sennas)
Arabic Ø³Ù†Ø§ (sanÄ).