cocoyamWiktionary 原文英美构词拆解cocococo词干yamyam词干词源说明From coco + yam, because old cocoyam was planted in coconut groves and resembled yams. New cocoyam was so named because it resembled old cocoyam.释义名词noun1New cocoyam: Xanthosoma, particularly Xanthosoma sagittifolium, or the edible root of that plant; malanga.2Old cocoyam: Colocasia esculenta; taro.