Arse stealing Queen track (5)
I believe the answer is:
trail
'track' is the definition.
(I know that trail is a type of track)
'arse stealing queen' is the wordplay.
'arse' becomes 'tail' (synonyms).
'stealing' is an insertion indicator.
'queen' becomes 'r' (abbreviation for regina, e.g. in ER ).
'tail' placed around 'r' is 'TRAIL'.
(Other definitions for trail that I've seen before include "Track made through wild country" , "Path or track through wild or hilly country" , "Forest path" , "Drag along the ground" , "Country path; follow" .)