[Perhaps alteration (influenced by pool) of obsolete cesperalle, drainpipe, from Middle English suspiral, vent, from Old French sospirail, breathing hole, from souspirer, to breathe, from Latin suspÄ«rÄre, to sigh; see suspire.]
The Russian Ruble is also known as the Russian Rouble. The United States Dollar is also known as the American Dollar, and the US Dollar. The symbol for RUB can be written R. The symbol for USD can be written $. The Russian Ruble is divided into 100 kopecks. The United States Dollar is divided into 100 cents.
The Russian currency is the ruble, according to the XE website. The symbol for the ruble is ???. The ruble's minor unit is the kopek (?.), which amounts to 1/100 rubles.