Hide, having a nap (5)
I believe the answer is:
suede
'hide' is the definition.
(suede is a material made from an animal's hide)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for suede that I've seen before include "material used in gloves" , "unprepared material" , "Undressed kidskin" , "Type of leather" , "Leather with velvety nap used in shoes and clothes" .)