n.vine widely distributed in eastern North America producing racemes of purple to maroon flowers and abundant (usually subterranean) edible one-seeded pods resembling peanuts
N（名词）
a North American leguminous climbing plant, Amphicarpa bracteata, having fleshy curved one-seeded pods, which ripen in or on the ground 同株二型豆; 产于北美的豆科攀登植物，长有新鲜的弧形单子豆荚，成熟时掉于地面