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Jyutping gin2 zi2
Pinyin jiǎn zi

Definitions (CC-CEDICT)
  1. callus (patch or hardened skin)
  2. corns (on the feet)
Definitions (Wiktionary)
  1. noun
    callus
    (syn.) 茧子, 繭子, 老繭, 手跉, 老茧, 趼, 繭, 胼胝, 茧