What is the meaning of Alloy?

A metal that is a combination of two or more elements, at least one of which is a metal, a base metal.

A metal of lesser value, mixed with a metal of greater value.

An admixture; something added which stains, taints etc.

Fusion, marriage, combination.

To mix or combine; often used of metals.

To reduce the purity of by mixing with a less valuable substance.

To impair or debase by mixture.

Source: wiktionary.org