potato bean

Noun (3)

1. twining plant of Amazon basin having large edible rootsSynonyms: yam beanPachyrhizus tuberosus
2. a North American vine with fragrant blossoms and edible tubers; important food crop of Native AmericansSynonyms: groundnutgroundnut vineIndian potatowild beanApios americanaApios tuberosa
3. nutlike tuber; important food of Native AmericansSynonyms: groundnutwild bean