1. A small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead
   - cupel, refractory pot

Derived forms: bone-ash cups

Type of: vessel

• sortition
• sorus
• SOS
• sostenuto
• sot
• soteriological
• Corinthian order
• Coriolis effect
• Coriolis force
• corium
• Corixa
• Corixidae
• cork
• cork jacket
• cork oak
• cork tree
• cork up
• corkage
• corkboard
• corked
• corker
• corking
• corkscrew
• corkscrew flower
• corkwood