A county sorted out (6)
I believe the answer is:
dorset
'a county' is the definition.
(I know that Dorset is a county)
'sorted out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'sorted' is an anagram of 'DORSET'.
(Other definitions for dorset that I've seen before include "English county -- sorted (anag)" , "County adjoining 1" , "South-west area" , "Strode (anag.)" , "Coastal county of southern England" .)