cidaris /sidˈə-ris/

1. A Persian royal tiara
2. (with cap) a genus of sea urchins, mostly fossil

• coign
• coigne
• coignes
• coign of vantage
• coigns
• coil
• coiled
• coiling
• coils
• coin
• coinage
• coinages
• coin a phrase
• coin box
• coin boxes
• coincide
• coincided
• coincidence
• coincidences
• coincidencies
• coincidency
• coincident
• coincidental
• coincidentally
• coincidently