\Speiss\, n. (Metal.)
Impure metallic arsenides, principally of iron, produced in
copper and lead smelting.

\Speiss\, n. [Cf. G. speise food, mixed metal for bells,
etc.] (Metal.)
A regulus consisting essentially of nickel, obtained as a
residue in fusing cobalt and nickel ores with silica and
sodium carbonate to make smalt.