Court supporting Italian barman's decision (7)
I believe the answer is:
verdict
'decision' is the definition.
(verdict is a kind of decision)
'court supporting italian barman's' is the wordplay.
'court' becomes 'ct' (abbreviation used in road names).
'supporting' is a charade indicator (letters next to each other) (in a down clue, some letters go below others).
'italian barman's' becomes 'verdi' (I can't explain this - if you can you should believe this answer much more).
'ct' put after 'verdi' is 'VERDICT'.
Can you help me to learn more?
(Other definitions for verdict that I've seen before include "Result of deliberation" , "stage in Trial by Jury" , "Legal decision" , "Judgment" , "What a jury brings in" .)