DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   dross
       n 1: worthless or dangerous material that should be removed;
            "there were impurities in the water" [syn: impurity,
            dross]
       2: the scum formed by oxidation at the surface of molten metals
          [syn: slag, scoria, dross]