| Noun | 1. | genus Vigna - genus of vines or erect herbs having trifoliate leaves and yellowish or purplish flowers; of warm or tropical regions; most species often placed in genus Phaseolusmoth bean, Phaseolus aconitifolius, Vigna aconitifolia - East Indian legume having hairy foliage and small yellow flowers followed by cylindrical pods; used especially in India for food and forage and soil-conditioning; sometimes placed in genus Phaseolus | |