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Jyutping we2 zi2
Pinyin wā zi

Definitions (Wiktionary)
  1. noun, Cantonese
    a kind of marble game

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Jyutping waa2 zi2
Pinyin wā zi

Definitions (粵典–words.hk)
  1. 名詞
    小朋友​玩石​仔​嘅​遊​戲​,​玩法​有​好多​種
    Children's game of jackstones that can be played in a variety of ways.