cidaris /sidˈə-ris/

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

• grapples
• grappling
• grappling-hook
• grappling-iron
• grappling-irons
• graptolite
• graptolites
• graptolitic
• grapy
• GRAS
• grasp
• graspable
• grasp at straws
• grasped
• grasper
• graspers
• grasping
• graspingly
• graspingness
• graspingnesses
• graspless
• grasps
• grasp the nettle
• grass
• grassbird