Rŭbĭco (nom. Rubicon, Luc. 1, 214 Cort. N. cr.), ōnis, m.,
a small river on the east coast of Italy , which formed the boundary between Italy and Cisalpine Gaul; celebrated for having been crossed by Caesar at the breaking out of the civil war; prob. the modern Pisatello , Plin. 3, 15, 20, § 115; Cic.Phil. 6, 3, 5; Suet.Caes. 31; Luc. 1, 214.