Dutch case-knife bean

Từ điển WordNet v3.1 - WordNet Dictionary

noun

tropical American 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
• Hypernyms:
pole bean