Noun: dross drós
- Worthless or dangerous material that should be removed
"The metalworker carefully skimmed the dross from the molten steel";
- impurity
- The scum formed by oxidation at the surface of molten metals
"dross was removed from the surface of the molten iron";
- slag, scoria
Derived forms: drosses
Type of: scum, waste, waste material, waste matter, waste product
Encyclopedia: Dross