free silver

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The free coinage of silver, especially at a fixed ratio to gold, advocated in the late 1800s to increase the demand for silver and to counteract inflation in the currency.

from The Century Dictionary.

• Advocating the free and unlimited coinage of silver at an arbitrary standard rate: as, the free-silver party.

from the GNU version of the Collaborative International Dictionary of English.

• The free coinage of silver; often, specif., the free coinage of silver at a fixed ratio with gold, as at the ratio of 16 to 1, which ratio for some time represented nearly or exactly the ratio of the market values of gold and silver respectively.