1) Legume 2) Leguminous plant 
Sesbania is a genus of flowering plants in the pea family, Fabaceae and the only genus found in Tribe Sesbanieae. Notable species include the Rattlebox (Sesbania punicea), Spiny Sesbania (Sesbania bispinosa), and Sesbania sesban, which is used in cooking. Plants of this genus, some of which are aquatic, can be used in alley cropping to increase th...
[n] - any of various plants of the genus Sesbania having pinnate leaves and large showy pealike flowers
noun any of various plants of the genus Sesbania having pinnate leaves and large showy pea-like flowers