軲轆子 [轱辘－]

Jyutping gu1 luk1 zi2
Pinyin gū lù zi

Definitions (Wiktionary)
  1. noun, Mandarin, Yinchuan
    person not doing honest work
  2. noun, Jin
    wheel
  3. noun, Mandarin, Xi'an
    professional gambler
    (syn.) 賭棍, 赌棍