• Dross is another word for slag.

Hebrew #5509

ciyg, seeg;
or cuwg (Ezekiel 22:18), soog;

from OT:5472 in the sense of refuse; scoria:

KJV - dross.

From the Webster's Ninth new Collegiate Dictionary:

DROSS - The scum that forms on the surface of molten metal. (Slag.)

SLAG - The dross or scoria of a metal. (Dross.)