Also see definition of "Dross" in Word Study
NET Glossary: the scum that forms on the surface of molten metal
Dross [ebd]
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.
DROSS [isbe]
DROSS - 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).
Also see definition of "Dross" in Word Study
