rubicon是什么意思音标:英 [ˈru:bɪkən]美 [ˈrubɪˌkɑn]

n. （意大利中部的）卢比肯河

n. the boundary in ancient times between Italy and Gaul; Caesar's crossing it with his army in 49 BC was an act of war
n. a pne that when crossed permits of no return and typically results in irrevocable commitment