Item sent abroad no longer -- a fortified wine (6)
I believe the answer is:
export
'item sent abroad' is the definition.
(I've seen this before)
'no longer a fortified wine' is the wordplay.
'no longer' becomes 'ex' (prefix meaning former or onetime).
'a fortified wine' becomes 'port' (port is a kind of fortified wine).
'ex'+'port'='EXPORT'
(Other definitions for export that I've seen before include "Send goods for sale abroad" , "Send (goods) overseas" , "Sell or transfer abroad" , "Sell goods abroad" , "Item sent abroad" .)