Related Clues:

• A stake, metaphorically
• Potato covering
• iPod cover
• Thin skin on surface
• Fine overlay or superficial refinement
• A surface coating or skin
• Superficial veneer
• Thin layer of fine wood
• A thin outer layer
• Thin layer on surface, often of wood
• A thin outer covering as of wood
• Thin covering on the outside
• Thin covering on surface
• Thin covering on top, as of wood
• External membrane of body