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Jyutping ngau4 dau2
Pinyin niú dòu

Definitions (粵典–words.hk)
  1. 名詞
    牛​嘅​身​體​入​面​發​出​嚟​嘅​痘​;​後​來​發展​成​天花​疫苗​嘅​基​礎
    cowpox

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Jyutping ngau4 dau6
Pinyin niú dòu

Definitions (CC-CEDICT)
  1. cowpox
Definitions (Wiktionary)
  1. noun
    smallpox pustule; vaccine pustule
  2. noun
    cowpox
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)