Roll into examination in court (8)
I believe the answer is:
tribunal
'court' is the definition.
('tribunal' can be a synonym of 'court')
'roll into examination' is the wordplay.
'roll' becomes 'bun' ('bun' can be a synonym of 'roll').
'into' means one lot of letters goes inside another.
'examination' becomes 'trial' (I've seen this before).
'bun' put into 'trial' is 'TRIBUNAL'.
'in' is the link.
(Other definitions for tribunal that I've seen before include "Special court" , "Court appointed to look into a particular matter" , "Special investigation team constituted in brutal mode" , "case" , "A panel of judges" .)