Went to bed (7)
'went to bed' is the definition.
('retire' can be a synonym of 'go to bed')
This is the entire clue.
(Other definitions for retired that I've seen before include "No longer working" , "No longer active in work or profession" , "Ceased working" , "Gave up job, relaxed on pension" , "Left" .)
'went to bed' is the definition.
('turn in' can be a synonym of 'go to bed')
This is all the clue.
(Other definitions for turned in that I've seen before include "Gave up - went to bed" , "Stopped working - retired" .)