What is the meaning of scarlet runner?

noun

• Tropical American bean with red flowers and mottled black beans similar to Phaseolus vulgaris but perennial; a preferred food bean in Great Britain.
  • synonyms: scarlet runner bean, Dutch case-knife bean, runner bean, Phaseolus coccineus, Phaseolus multiflorus
• Hairy trailing or prostrate western Australian vine with bright scarlet-pink flowers.
  • synonyms: running postman, Kennedia prostrata
• Long bean pods usually sliced into half-inch lengths; a favorite in Britain.
  • synonyms: scarlet runner bean, runner bean, English runner bean