ground plum

noun

1. a prostrate milk vetch, Astragalus crassicarpus, of the legume family, growing in the prairie regions of North America.
2. its plum-shaped fruit.

ground plum

noun

1. a North American leguminous plant, Astragalus caryocarpus, with purple or white flowers and green thick-walled plumlike edible pods
2. the pod of this plant

Word History and Origins

Origin of ground plum¹

An Americanism dating back to 1855–60