- a prostrate milk vetch, Astragalus crassicarpus, of the legume family, growing in the prairie regions of North America.
- its plum-shaped fruit.
Origin of ground plum
An Americanism dating back to 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a North American leguminous plant, Astragalus caryocarpus, with purple or white flowers and green thick-walled plumlike edible pods
- the pod of this plant