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Jyutping mun4 gwai2
Pinyin mén guǐ

Definitions (Wiktionary)
  1. noun, Hokkien, Quanzhou, Xiamen
    gate cork (to prevent the latch from being easily removed)
    (syn.) 暗鬼, 鑰鬼, 門遏仔, 门遏仔, 钥鬼