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cocoyam

noun

noun Definition from Wiktionary (CC BY-SA). More about cocoyam at Wordnik → Where our words come from →

  1. New cocoyam: Xanthosoma, particularly Xanthosoma sagittifolium, or the edible root of that plant; malanga.
  2. Old cocoyam: Colocasia esculenta; taro.

Origin

From coco + yam, because old cocoyam was planted in coconut groves and resembled yams. New cocoyam was so named because it resembled old cocoyam.

From Wiktionary, via Kaikki.org (CC BY-SA)