\Smalt\, n. [It. smalto, LL. smaltum; of Teutonic origin;
cf. OHG. smalz grease, butter, G. schmalz grease, OHG.
smelzan to melt, G. schmelzen. See {Smelt}, v. t., and cf.
{Amel}, {Enamel}.]
A deep blue pigment or coloring material used in various
arts. It is a vitreous substance made of cobalt, potash, and
calcined quartz fused, and reduced to a powder.