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.-the quality, or comparative purity, of gold or silver; fineness.-a baser metal mixed with a finer.-admixture of anything which lessens the value or detracts from; as, no happiness is without alloy.-to reduce the purity of by mixing with a less valuable substance; as, to alloy gold with silver or copper, or silver with copper.-to mix, as metals, so as to form a compound.-to abate, impair, or debase by mixture; to allay; as, to alloy pleasure with misfortunes.-to form a metallic compound.