Definition of cupel
English to English noun - a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
source: WordNet 3.0 - A shallow porous cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime).
source: Webster 1913 verb - To refine by means of a cupel.
source: Webster 1913
Visual Synonyms 
Nearby Word
cupel, capel, coppel, cupola, cupule, couple, chapel, cupful, capelle, capella, cebuella, cappella, cue ball, causeful, coupable, copal, caple, cape aloe, cheval, coeval
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