n. A denomination of Russian silver and copper coins.n. The coins of this name current since 1855 are: in silver, the 25-copeck piece, and pieces of 20, 15, 10, and 5 copecks; in copper, pieces of 1, 2, and 3 copecks. The copeck, reckoned as the hundredth part of a ruble, is worth 0.582 United States cent.