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Jyutping wu1 ngam3 tin1
Pinyin wū àn tiān

Definitions (Wiktionary)
  1. noun, Hakka, Puxian-Min, Teochew
    overcast sky; cloudy day
    (syn.) 烏陰天, 陰天子, 乌暗天, 烏暗仔天, 䆀天, 歹天, 阴天子, 乌阴天, 乌暗仔天, 烏暗天