senna - definition of senna - synonyms, pronunciation, spelling from Free Dictionary

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Noun (1)

any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinallyType of shrub, bushKinds Alexandria senna, avaram, ringworm bush, coffee sennaMember of genus Senna

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Webster's Dictionary (1913)

Sen′na noun

Origin: Cf. It. & Sp. sena, Pg. sene, F. séné; all fr. Ar. sanā.

1. Medicine The leaves of several leguminous plants of the genus Cassia. (Cassia acutifolia, Cassia angustifolia, etc.). They constitute a valuable but nauseous cathartic medicine.

2. Botany The plants themselves, native to the East, but now cultivated largely in the south of Europe and in the West Indies.

Bladder senna. Botany See under Bladder. — Wild senna Botany, the Cassia Marilandica, growing in the United States, the leaves of which are used medicinally, like those of the officinal senna.

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54