Italian port (5)
'italian port' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for genoa that I've seen before include "Italian city has no age, oddly" , "Italian city; sail" , "Type of rich fruit cake" , "City of Italy" , "Seaport in northwestern Italy" .)
(Other definitions for naples that I've seen before include "Port near to Vesuvius" , "Italian city of the planes" , "Mediterranean city" , "See it and die, they say" , "Planes go awry in Italian port" .)
(Other definitions for rimini that I've seen before include "Italian holiday resort" , "Italian Adriatic port" , "Italian coastal city" , "Italian city on the Adriatic coast" , "Francesca's place" .)