Dross
the impurities of silver separated from the one in the process
of melting (Prov. 25:4; 26:23; Ps. 119:119). It is also used to
denote the base metal itself, probably before it is smelted, in
Isa. 1:22, 25.
Bibliography Information Easton, Matthew George. M.A., D.D., "Biblical Meaning for 'Dross' Eastons Bible Dictionary". bible-history.com - Eastons; 1897.