Domain of chief law enforcement officer at this place (6)
I believe the answer is:
sphere
'domain' is the definition.
(synonyms)
'chief law enforcement officer at this place' is the wordplay.
'chief law enforcement officer' becomes 'sp' (abbreviation for superintendent of police).
'at' is a charade indicator (letters next to each other).
'this place' becomes 'here' (I've seen this in other clues).
'sp'+'here'='SPHERE'
'of' is the link.
(Other definitions for sphere that I've seen before include "Ball shape" , "Field; globe" , "Round object" , "All-rounder" , "Perfectly round solid geometric figure" .)