a trailing, long-stemmed Asian vine, Vigna unguiculata sesquipedalis, of the legume family, having yellow or violet flowers and very long pods.
Words nearby asparagus bean
Origin of asparagus bean
An Americanism dating back to 1855–60
Also called yard-long bean.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020