asparagus bean

American  

noun

1. a trailing, long-stemmed Asian vine, Vigna unguiculata sesquipedalis, of the legume family, having yellow or violet flowers and very long pods.

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Etymology

Origin of asparagus bean

An Americanism dating back to 1855–60

Example Sentences

These have included lima beans, asparagus beans and hyacinth beans.

From Washington Post

The yard-long bean, sometimes called the asparagus bean, produces lush, vigorous vines and, in late summer, 18-inch, pencil-thin beans of sweet, nutty flavor.

From Washington Post

The yardlong or asparagus bean is a good candidate, but the year I tried it, it was a magnet for the Mexican bean beetle.

From Washington Post