Rough sleeper holds single record (7)
I believe the answer is:
dossier
'record' is the definition.
(dossier is a kind of record)
'rough sleeper holds single' is the wordplay.
'rough sleeper' becomes 'dosser' (I've seen this before).
'holds' means one lot of letters goes inside another.
'single' becomes 'i' (one).
'dosser' going around 'i' is 'DOSSIER'.
(Other definitions for dossier that I've seen before include "brief" , "File of papers (sometimes dodgy)" , "Report" , "A collection of papers" , "Record" .)