WordNet sense 1 (tropical American bean with red flowers and mottled black beans similar to Phaseolus vulgaris but perennial; a preferred food bean in Great Britain):

scarlet runner, Dutch case-knife bean, Phaseolus coccineus, Phaseolus multiflorus, scarlet runner bean

WordNet sense 2 (long bean pods always sliced into half-inch lengths; a favorite in Britain):

English runner bean