1. East Indian shrub • Syn: Tephrosia purpurea • Hypernyms: hoary pea 2. dense shrub of moist riverbanks and flood plains of the eastern United States having attractive fragrant foliage and dense racemes of dark purple flowers • Syn: false indigo, Amorpha fruticosa • Hypernyms: amorpha 3. an erect to spreading hairy shrub of the Pacific coast of the United States having racemes of red to indigo flowers • Syn: false indigo, Amorpha californica • Hypernyms: amorpha