裏うらカジノ

noun

illegal casino; unlicensed gambling house

Refers to a gambling establishment operating without a license, often hidden or back-alley. The prefix 裏 means 'back' or 'underground'.

• 警けい察さつは繁はん華か街がいの裏うらカジノを摘てき発はつした。

  The police raided an illegal casino in the entertainment district.