potato bean

Noun

• nutlike tuber; important food of Native Americans

• a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans

• twining plant of Amazon basin having large edible roots

Related words

• Synonyms: 
  groundnut , wild bean , groundnut vine , Indian potato , Apios americana , Apios tuberosa , yam bean , Pachyrhizus tuberosus