翼よく葉ようMeanings1nounpetiole wingBotanical term for a flattened, leaf-like extension along the petiole (leaf stalk).この植しょく物ぶつの翼よく葉ようは、葉よう柄へいに沿そって広ひろがっている。The petiole wing of this plant extends along the leaf stalk.