periostracum /per-i-osˈtrə-kəm/

The horny outer layer of a mollusc's shell

• burettes
• bantams
• bantamweight
• bantamweights
• banted
• banteng
• bantengs
• banter
• bantered
• banterer
• banterers
• bantering
• banteringly
• banterings
• banters
• banting
• bantingism
• bantingisms
• bantings
• bantling
• bantlings
• bants
• Bantu
• Bantus
• Bantustan