[n] - tropical American high-climbing bean with red flowers and mottled black beans similar to Phaseolus vulgaris but perennial 2. [n] - hairy trailing or prostrate western Australian vine with bright scarlet-pink flowers 3. [n] - long bean pods always sliced into half-inch lengths Found on http://www.webdictionary.co.uk/definition.php?query=scarlet%20runner