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Jyutping nai4 seoi2 gung1
Pinyin ní shuǐ gōng

Definitions (Wiktionary)
  1. noun
    bricklayer; tiler; plasterer
    (syn.) 泥瓦匠, 泥水师, 泥水匠, 泥水師, 泥工, 瓦工, 泥瓦工, 瓦匠
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)
  1. 職業:臺
    泥水工
  2. 職業:陸
    瓦工