bone-ash cup is a noun meaning "a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead". It carries one recorded sense.
a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
Definitions, synonyms and semantic relations for bone-ash cup come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.