\Cu"pel\ (k[=u]"p[e^]l), n. [LL. cupella cup (cf. L.
cupella, small cask, dim. of cupa) : cf. F. coupelle. See
{Cup}, and cf. {Coblet}.]
A shallow porous cup, used in refining precious metals,
commonly made of bone ashes (phosphate of lime). [Written
also {coppel}.]
{Cupel dust}, powder used in purifying metals.

\Cu*pel"\ (k[-u]*p[e^]l"), v. t. [imp. & p. p. {Cupelled}
(-p?ld"); p. pr. & vb. n. {Cupelling}.]
To refine by means of a cupel.