Get back; recover (6)
I believe the answer is:
regain
I believe this is a double definition.
'get back' is the first definition.
(I've seen this in another clue)
'recover' is the second definition.
(I know that recover can be written as regain)
(Other definitions for regain that I've seen before include "Get back, recover the use of" , "Take back (the Ashes, for example)" , "Recover - in gear (anag)" , "Get back (previously owned object)" , "Recover, retrieve" .)