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.
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Origin of winged bean
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019