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Jyutping sou3 zi2
Pinyin sù zi

Definitions (Wiktionary)
  1. noun
    crop (of a bird)
    (syn.) 雞歲, 雞腂, 化食胆, 鸡腂, 雞𡨢, 鸡𡨢, 膆袋, 雞胲, 化食膽, 雞胿, 鸡胿, 鸡岁, 鸡胲, 嗉囊
  2. noun, Beijing
    tin or porcelain alcohol flask with large bottom and thin and long neck