Get hint about contract (7)
I believe the answer is:
tighten
'contract' is the definition.
(I've seen this before)
'get hint about' is the wordplay.
'about' indicates anagramming the letters.
'get'+'hint'='gethint'
'gethint' anagrammed gives 'TIGHTEN'.
(Other definitions for tighten that I've seen before include "contract" , "put the squeeze on" , "Make tauter" , "Make harder to undo" , "Fasten more firmly" .)