资料来源 : WordNet®

wild sweet potato vine
     n : tropical American prostrate or climbing herbaceous perennial
         having an enormous starchy root; sometimes held to be
         source of the sweet potato [syn: {wild potato vine}, {man-of-the-earth},
          {manroot}, {scammonyroot}, {Ipomoea panurata}, {Ipomoea
         fastigiata}]