Alloy

1. v. t. Admixture of anything which lessens the value or detracts from; as, no happiness is without alloy.
2. v. t. Any combination or compound of metals fused together; a mixture of metals; for example, brass, which is an alloy of copper and zinc. But when mercury is one of the metals, the compound is called an amalgam.
3. v. t. The quality, or comparative purity, of gold or silver; fineness.
4. v. t. A baser metal mixed with a finer.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.