1. Having no ribs or no visible ribs

Antonym: ribbed

• cribriform
• Cricetidae
• Cricetus
• Cricetus cricetus
• Crichton
• crick
• cricket
• cricket ball
• cricket bat
• cricket equipment
• cricket frog
• cricket match
• cricket-bat willow
• cricketer
• cricoid
• crier
• crikey
• crime
• crime rate
• crime syndicate
• crime wave
• Crimea
• Crimea-Congo hemorrhagic fever
• Crimean
• Crimean War