English

Noun

dirty pool ‎(uncountable)

1. (slang) Foul play, misconduct, underhandedness.
   • 1967, Keith Wheeler and Sandy Smith, "Murf the Surf and his Jewel-studded Jinx," Life, vol. 62, no. 16 (21 Apr.), p. 95:

     The thieves, in their turn, have developed a self-pity syndrome about the FBI, considering government surveillance to be dirty pool — unjustifiable interference with free enterprise.