dros (sigh): The refuse of smelting of precious metal (Prov 25:4; 26:23); used figuratively of what is base or worthless (Isa 1:22,25; Ezek 22:18,19; Ps 119:119).
Bibliography Information Orr, James, M.A., D.D. General Editor. "Definition for 'DROSS'". "International Standard Bible Encyclopedia". bible-history.com - ISBE; 1915.