The process of refining metals is referred to by way of illustrations in Isa. 1:25; Jer. 6:29; Zech. 13:9; Mal. 3:2, 3.
·noun One who, or that which, refines. ...
Webster's Dictionary of the English Language
The refiner's art was essential to the working of the precious metals. It consisted in the separatio...
William Smith's Bible Dictionary