potato bean

nouns

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