| Noun | 1. | Lablab purpureus - perennial twining vine of Old World tropics having trifoliate leaves and racemes of fragrant purple pealike flowers followed by maroon pods of edible seeds; grown as an ornamental and as a vegetable on the Indian subcontinent; sometimes placed in genus Dolichosvine - weak-stemmed plant that derives support from climbing, twining, or creeping along a surface | |