potato bean
n 1: twining plant of Amazon basin having large edible roots
[syn: {yam bean}, {potato 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}, {potato
bean}, {wild bean}, {Apios americana}, {Apios tuberosa}]
3: nutlike tuber; important food of Native Americans [syn:
{groundnut}, {potato bean}, {wild bean}]