Rubicon
Ru·bi·con
noun \ˈrü-bi-ˌkän\Definition of RUBICON
: a bounding or limiting line; especially : one that when crossed commits a person irrevocably
See Origin of RUBICON
Latin Rubicon-, Rubico, river of northern Italy forming part of the boundary between Cisalpine Gaul and Italy whose crossing by Julius Caesar in 49 b.c. was regarded by the Senate as an act of war
First Known Use: 1626
Learn More About RUBICON
Browse
Seen & Heard 
What made you want to look up Rubicon? Please tell us where you read or heard it (including the quote, if possible).
