Cu·pel v. t. [imp. & p. p. Cupelled p. pr. & vb. n. Cupelling.] To refine by means of a cupel.
◄ ►
cupel
n : small porous bowl made of bone ash used in assaying to
separate precious metals from e.g. lead [syn: bone-ash
cup, refractory pot]
[also: cupelling, cupelled]