The spelling of the word "Rubican" may cause confusion, as it is commonly misspelled as "Rubicon." However, the correct spelling includes an "a" in the second syllable, as demonstrated by its IPA phonetic transcription: [ruh-bi-kuhn]. The word "Rubican" refers to a military boundary, derived from the Rubicon River in Italy. Despite its infrequent use in modern language, it is still important to remember and spell the word correctly to convey accuracy in communication.
Of a bay, sorrel, or black colour, with a light-grey or white on the flanks; red predominating over grey in the colour of a horse.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
There is no widely recognized word "Rubican" in the English language. It is possible that you may be referring to "Rubicon", which has its own etymology. The word "Rubicon" derives from Latin, specifically the Latin phrase "ad Rubiconem". The Rubicon is a small river in Italy, which gained historical significance due to the actions of Julius Caesar. The phrase "crossing the Rubicon" is an idiom that refers to making a decision or taking a step that cannot be reversed, much like Caesar's decision to cross the river, which ultimately led to the Roman Civil War.