Outer coating (7)
I believe the answer is:
surface
(Other definitions for surface that I've seen before include "Outside layer" , "Plane" , "Outer or upper layer" , "Outer appearance" , "Wake up" .)
I believe the answer is:
surface
(Other definitions for surface that I've seen before include "Outside layer" , "Plane" , "Outer or upper layer" , "Outer appearance" , "Wake up" .)