ṣāraf צָרַף ‘to refine’ (Hebrew)

Etymology^?: a primitive root

ṣāraf v
1) to smelt, refine, test
 1a) (Qal)
  1a1) to smelt, refine
  1a2) to test
  1a3) to test (and prove true)
  1a4) smelter, refiner, goldsmith (participle)
 1b) (Niphal) to be refined
 1c) (Piel) to be a refiner
  1c1) refiner (participle)