cast, (re-)fine(-er), founder, goldsmith, melt, pure, purge away, try

Boyd’s Bible Dictionary:

(who makes fine). A worker in precious metals (Isa. 1:25; Isa. 40:10; Jer. 6:29; Zech. 13:9; Mal. 3:3).

“Finer” From Concise Bible Dictionary:

See REFINER.

“Refiner” From Concise Bible Dictionary:

God is the refiner of His people, as the precious metals have to be separated from the dross that clings to them (Prov. 25:4—where the AV has “finer”; Isa. 48:10; Zech. 13:9; Mal. 3:2-3). So God tests the believer’s heart (1 Thess. 2:4), and his faith, which leads to endurance (James 1:12; 1 Pet. 1:7).

Strong’s Dictionary of Hebrew Words:

Number:

6884 (find all occurrences in KJV Bible)

Transliteration:

tsaraph

Phonic:

tsaw-raf’

Meaning:

a primitive root; to fuse (metal), i.e. refine (literally or figuratively)

KJV Usage:

cast, (re-)fine(-er), founder, goldsmith, melt, pure, purge away, try