1. The iridescent internal layer of a mollusk shell
   - mother-of-pearl

Derived forms: nacres

See also: nacreous

Type of: shell

Encyclopedia: Nacre

• reappraise
• rear
• rear admiral
• rear back
• rear lamp
• rear light
• rear of barrel
• rear of tube
• rear window
• rear-end
• rearguard
• rearing
• rearm
• rearmament
• rearmost
• rearrange
• rearrangement
• rearrest
• rearview mirror
• rearward
• rearwards
• reascend
• reason
• reason out
• reasonable