1) Corkscrew flower 2) Legume 3) Leguminous plant 4) Phaseolus caracalla 5) Snail bean 6) Snail flower 7) Snail-flower 8) Vigna caracalla 1) Corkscrewflower 
[n] - perennial tropical American vine cultivated for its racemes of showy yellow and purple flowers having the corolla keel coiled like a snail shell
snail-flower noun perennial tropical American vine cultivated for its racemes of showy yellow and purple flowers having the corolla keel coiled like a snail shell; sometimes placed in genus Phaseolus