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Jyutping saam1 hong4 lou2
Pinyin sān xíng lǎo

Definitions (Wiktionary)
  1. noun, Cantonese
    person in the construction trades of bricklaying, painting and carpentry; laborer who is a bricklayer (or plasterer), painter or carpenter

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Jyutping saam1 hong4 lou2
Pinyin sān háng lǎo

Definitions (CC-CANTO)
  1. Carpenter,construction worker and upfitter