hard peg

In economics, a policy in which the authorities insist on some permanent, precise guarantee of the value of the local currency to some other thing: a unit measure of gold, the US dollar, the euro, or the pound. Historically, the US dollar had a hard peg to gold from 1946 to 1971, while other currencies in the developed world had a hard peg to the US dollar. Since 1971, most of the world's money is in floating currency (whose relative value is set by the free market).