Lady's with German recluse (6)
I believe the answer is:
hermit
'recluse' is the definition.
('hermit' can be a synonym of 'recluse')
'lady's with german' is the wordplay.
'lady' becomes 'her' (I've seen this before).
'with german' becomes 'mit'.
'her'+'mit'='HERMIT'
(Other definitions for hermit that I've seen before include "Liver in solitude" , "Person like Peter" , "Solitary dweller" , "Ascetic who leads an isolated life" , "One lives in solitude for religious reasons" .)