Related Clues:

• Makes fast progress - by . . . . . and bounds
• Must be worth a lot to have to be made so secure in them
• Containers that may be cracked
• Things that may be faith-based?
• Some balletic moves
• They may be hard to crack
• Bounds' partners
• Places for rings, maybe
• They may be cracked using stethoscopes
• Bounds, jumps
• See 5
• Burial places for Manx cat: put another one back in them
• Jewel cases?
• They may be blown or cracked
• Emulates lords in a song