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