potato bean

Noun	1.	potato bean - twining plant of Amazon basin having large edible roots Synonyms: Pachyrhizus tuberosus, yam bean
	2.	potato bean - a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans Synonyms: Apios americana, Apios tuberosa, groundnut, groundnut vine, Indian potato, wild bean
	3.	potato bean - nutlike tuber; important food of Native Americans Synonyms: groundnut, wild bean

genus Pachyrhizus, Pachyrhizus, Pachyrhizus tuberosus, vine, yam bean