Source : WordNet®

tinnevelly senna
     n : erect shrub having racemes of tawny yellow flowers; the
         dried leaves are used medicinally as a cathartic;
         sometimes placed in genus Cassia [syn: {Alexandria senna},
          {Alexandrian senna}, {true senna}, {Indian senna}, {Senna
         alexandrina}, {Cassia acutifolia}, {Cassia augustifolia}]