- a tropical Asian vine, Psophocarpus tetragonolobus, of the legume family, of which the pods, seeds, leaves, and flowers are edible and nutritious.
- the pod of this plant, having four flangelike longitudinal extensions.
Origin of winged bean
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018