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Jyutping siu2 tou5 zai2
Pinyin xiǎo dù zǎi

Definitions (Wiktionary)
  1. noun, Hokkien, Quanzhou
    pig urinary bladder (also used jokingly to refer to that of a human)
    (syn.) 尿脬, 尿泡哩, 膀胱, 尿泡, 小肚, 尿袋, 小肚子, 尿泡泡, 尿包, 小肚仔