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Rubicon

Definitions of Rubicon
  1. noun
    the boundary in ancient times between Italy and Gaul; Caesar's crossing it with his army in 49 BC was an act of war
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    example of:
    bound, boundary, bounds
    the line or plane indicating the limit or extent of something
  2. noun
    a line that when crossed permits of no return and typically results in irrevocable commitment
    synonyms: point of no return
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    type of:
    contrast, demarcation, dividing line, line
    a conceptual separation or distinction
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