私し設せつ馬ば券けん屋や

noun

illegal bookie; unlicensed bookmaker

Refers to an individual or operation that takes bets on horse races without official authorization, outside the legal pari-mutuel system.

• 警けい察さつは繁はん華か街がいの私し設せつ馬ば券けん屋やを摘てき発はつした。

  The police raided an illegal bookie in the downtown area.