Hang from gallows again (3)
I believe the answer is:
sag
'hang' is the definition.
(I've seen this in another clue)
'from gallows again' is the wordplay.
'from' indicates the answer is hidden within the clue.
'SAG' is hidden within 'gallows again'.
(Other definitions for sag that I've seen before include "Lose energy" , "Hang down loosely" , "Decline" , "Cave in" , "Droop, sink in the middle" .)