What does the word rubicon mean?

Usage examples for rubicon

  1. The first two hands were lost by Landry, who, having each time approached the " Rubicon," succeeded in avoiding it only by the greatest skill and prudence. – Zibeline, Complete by Phillipe de Massa Last Updated: March 2, 2009
  2. She had crossed the Rubicon of marital ethics. – Running Sands by Reginald Wright Kauffman
  3. What am I doing worse Than did famed Caesar at the Rubicon, When he the legions led against his country, The which his country had delivered to him? – The Death of Wallenstein A Play by Frederich Schiller
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