Source : WordNet®

Indian potato
     n 1: a North American vine with fragrant blossoms and edible
          tubers; important food crop of Native Americans [syn: {groundnut},
           {groundnut vine}, {potato bean}, {wild bean}, {Apios
          americana}, {Apios tuberosa}]
     2: very tall American perennial of central and the eastern
        United States to Canada having edible tuberous roots [syn:
         {giant sunflower}, {tall sunflower}, {Helianthus
        giganteus}]