Related Clues:

• She will, in short, have shades of this on the outside
• The woman will be hard outside
• The lady will shortly be hard outside
• Shades of being hard outside
• Shell needs us, by the sound of it, to be awake
• Turtle's protection
• Hatchling's former home
• See 27
• See 18
• Case put under fire
• Shell that is going away from one opposed to warfare
• Explosive device found on the beach
• Outer case
• Characteristic feature of crustacean
• Outer covering of 1 across, say