dutch case-knife bean meaning and definition

DUTCH CASE-KNIFE BEAN noun

Definition of Dutch case-knife bean (noun)

1. tropical American bean with red flowers and mottled black beans similar to Phaseolus vulgaris but perennial; a preferred food bean in Great Britain
   • synonyms: Phaseolus coccineus, Phaseolus multiflorus, runner bean, scarlet runner, scarlet runner bean