Definition that contains bone ash
- cupel a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
- bone-ash cup a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
- refractory pot a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
- bone china fine porcelain that contains bone ash