double-cross vs snooker

double-cross

verb
  • To betray or go back on. 

  • To cross twice in hybridization, as (A × B) × (C × D); for example, in commercial hybrid seed corn, A through D are classically inbreds, and their grandoffspring is the seed for sale. 

snooker

verb
  • To fool or bamboozle. 

  • To play the game of snooker. 

  • To put (someone) in a difficult situation. 

  • To become or cause to become inebriated. 

  • To place the cue ball in such a position that (the opponent) cannot directly hit the required ball with it. 

noun
  • A cue sport, popular in the UK and other Commonwealth of Nations countries. 

  • The situation where the cue ball is in such a position that the opponent cannot directly hit a legal ball with it. 

How often have the words double-cross and snooker occurred in a corpus of books? (source: Google Ngram Viewer )