蠻工 [蛮－]

Jyutping maan4 gung1
Pinyin mán gōng

Definitions (Wiktionary)
  1. noun, Xiang
    heavy manual labor; unskilled work
    (syn.) 粗穡, 粗穑, 粗活, 粗工, 粗工課, 粗工课, 蠻工子, 蛮工子, 粗重工课, 粗重工課