Ruble n. (Written also rouble) The unit of monetary value in Russia. It is divided into 100 copecks, and in the gold coin of the realm (as in the five and ten ruble pieces) is worth about 77 cents. The silver ruble is a coin worth about 60 cents.
... against him. Had Napoleon waited two hundred days instead of half that time, who knows that he might not yet have been the arbiter of Europe? His descent united all factions, and Alexander declared that he would pursue Napoleon "down to his last man and his last ruble." ... — The Story of Russia • R. Van Bergen