资料来源 : WordNet®

Dutch case-knife bean
     n : tropical American high-climbing bean with red flowers and
         mottled black beans similar to Phaseolus vulgaris but
         perennial; a preferred food bean in Great Britain [syn: {scarlet
         runner}, {scarlet runner bean}, {runner bean}, {Phaseolus
         coccineus}, {Phaseolus multiflorus}]