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Jyutping pou4 tou4
Pinyin pú táo

Definitions (Wiktionary)
  1. noun
    rose apple (Syzygium jambos)
  2. noun, Shanghainese-Wu
    walnut

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Jyutping pou4 tou2
Pinyin pú táo

Definitions (粵典–words.hk)
  1. 名詞
    一種​樹果​,​肉同​核之間​有​空隙​,​果實​熟​咗​之​後​係​黃​綠色
    plum rose; wax apple; rose apple; fruit of the Syzygium jambos tree

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Jyutping pou4 tou4
Pinyin pú tao

Definitions (CC-CANTO)
  1. rose apple