hog peanut

noun
1.
a twining plant, Amphicarpaea bracteata, of the legume family, bearing pods that ripen in or on the ground.
Origin
1855-60, Americanism
British Dictionary definitions for hog peanut

hog peanut

noun
1.
a North American leguminous climbing plant, Amphicarpa bracteata, having fleshy curved one-seeded pods, which ripen in or on the ground