Vehicle one brought across quiet island (5)
I believe the answer is:
capri
'island' is the definition.
(Italian island)
'vehicle one brought across quiet' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'one' becomes 'i' (Roman numeral).
'brought across' is an insertion indicator (some letters are brought around or across others).
'quiet' becomes 'p' (music symbol for 'piano', ie soft or quiet).
'car'+'i'='cari'
'cari' going around 'p' is 'CAPRI'.
(Other definitions for capri that I've seen before include "Neapolitan isle" , "Mediterranean island" , "Island home of G. 24" , "Romantic Isle in Bay of Naples" , "Island in the Gulf of Naples" .)