Rubicon

Etymology
From, , possibly from , from , ultimately from , an allusion to the colour of the river caused by mud deposits.

Proper noun

 * 1)   which flowed into the Adriatic Sea marking the boundary between the Roman province of Gaul and the Roman heartland. Its crossing by  in 49  began a civil war.
 * 2) The same river in the present day, identified with a river previously named Fiumicino.

Translations

 * Basque: Rubikon
 * Bulgarian: Рубикон
 * Catalan: Rubicó
 * Czech: Rubikon
 * Danish: Rubicon
 * Dutch: Rubicon
 * Esperanto: Rubikono
 * Finnish: Rubikon
 * French:
 * German:
 * Greek:
 * Hebrew: רוביקון
 * Hungarian: Rubicon
 * Italian: Rubicone
 * Latin: Rubicō, Rubicōn
 * Latvian: Rubikona
 * Lithuanian: Rubikonas
 * Norwegian:
 * Bokmål: Rubicon
 * Nynorsk: Rubicon
 * Polish: Rubikon
 * Portuguese: Rubicão
 * Romanian: Rubicon
 * Russian:
 * Serbo-Croatian:
 * Cyrillic: Рубикон
 * Roman:
 * Slovak: Rubikon
 * Slovene:
 * Spanish: Rubicón
 * Swedish: Rubicon
 * Turkish: Rubikon
 * Ukrainian: Рубіко́н

Etymology
Possibly from rubeus (“red, reddish”), from rubeō (“to be red”), ultimately from Proto-Indo-European *h₁rewdʰ- (“red”), an allusion to the colour of the river caused by mud deposits.

Proper noun

 * 1) Rubicon