ru·ble (chiefly US) or chiefly Brit rou·ble 
/ˈru:bəl/ noun
plural ru·bles /ˈru:bəl/ noun 1 [count] : the basic unit of money of Russia
▪ It costs 40 rubles. ▪ a hundred-ruble bill 2 [count] : a coin representing one ruble
▪ She gave the driver a ruble. ▪ a handful of rubles 3 the ruble technical : the value of the ruble compared with the value of the money of other countries
▪ The ruble fell against the U.S. dollar.
▪ It costs 40 rubles. ▪ a hundred-ruble bill
▪ She gave the driver a ruble. ▪ a handful of rubles
▪ The ruble fell against the U.S. dollar.
