Search Result for "senna": 
Wordnet 3.0

NOUN (1)

1. any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinally;

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2 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Senna \Sen"na\, n. [Cf. It. & Sp. sena, Pg. sene, F. s['e]n['e]; all fr. Ar. san[=a].] 1. (Med.) The leaves of several leguminous plants of the genus Cassia. (Cassia acutifolia, Cassia angustifolia, etc.). They constitute a valuable but nauseous cathartic medicine. [1913 Webster] 2. (Bot.) The plants themselves, native to the East, but now cultivated largely in the south of Europe and in the West Indies. [1913 Webster] Bladder senna. (Bot.) See under Bladder. Wild senna (Bot.), the Cassia Marilandica, growing in the United States, the leaves of which are used medicinally, like those of the officinal senna. [1913 Webster]
WordNet (r) 3.0 (2006):

senna n 1: any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinally