Recover by a sort of miracle (7)
I believe the answer is:
reclaim
'recover' is the definition.
(I know that recover can be written as reclaim)
'a sort of miracle' is the wordplay.
'a sort of' indicates an anagram.
'miracle' with letters rearranged gives 'RECLAIM'.
'by' acts as a link.
(Other definitions for reclaim that I've seen before include "'Make useful again, land say (7)'" , "Retrieve, recover" , "Miracle (anag)" , "Bring under cultivation" , "Get back (airline baggage)" .)