rubiconPronunciation: /ˈruːbɪk(ə)n, -kɒn/Definition of rubicon noun (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. verb (rubicons, rubiconing, rubiconed) [with object] score a rubicon against (one’s opponent). Origin: late 19th century: from Rubiconrubicon in other Oxford dictionaries Definition of rubicon in the US English dictionary
