cidaris /sidˈə-ris/

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

• daring-hardy
• daringly
• darings
• dariole
• darioles
• Darjeeling
• Darjeelings
• dark
• dark adaptation
• dark adaptations
• dark-adapted
• Dark Ages
• Dark Continent
• dark current
• darken
• darkened
• dark energy
• darkening
• darkens
• darken someone's door
• darker
• darkest
• darkey
• darkeys
• darkfield microscope