Official record showing a court answer (4)
I believe the answer is:
acta
'official record' is the definition.
(I've seen this in another clue)
'a court answer' is the wordplay.
'court' becomes 'ct' (abbreviation used in road names).
'answer' becomes 'a' (abbreviation eg in Q and A).
'a'+'ct'+'a'='ACTA'
'showing' acts as a link.
(Other definitions for acta that I've seen before include "records" , "minutes of official proceedings" .)