(in piquet) an act of winning a game against an opponent whose total score is less than 100, in which case the loser's score is added to rather than subtracted from the winner's
score a rubicon against (one's opponent)
a stream in north-eastern Italy that marked the ancient boundary between Italy and Cisalpine Gaul. Julius Caesar led his army across it into Italy in 49 BC, breaking the law forbidding a general to lead an army out of his province, and so committing himself to war against the Senate and Pompey. The ensuing civil war resulted in victory for Caesar after three years
a point of no return
on the way to political union we are now crossing the Rubicon
with this book he has crossed a Rubicon