Covering of furs confused expert (7)
I believe the answer is:
surface
'covering' is the definition.
(thesaurus)
'furs confused expert' is the wordplay.
'confused' is an anagram indicator.
'expert' becomes 'ace' (ace can informally mean very good).
'furs' with letters rearranged gives 'surf'.
'surf'+'ace'='SURFACE'
'of' is the link.
(Other definitions for surface that I've seen before include "Outer boundary" , "get out of bed" , "Plane" , "Uppermost layer" , "Superficial appearance" .)