Neapolitan

Neapolitan means "from the city of Naples in Italy".  It is an adjective.
Neapolitan can mean:

 Someone who lives in Naples or comes from Naples
 Neapolitan language, the language spoken in the former territory of Kingdom of two siclies"
 Neapolitan ice cream, a mixture of chocolate, vanilla, and strawberry ice cream side-by-side in the same container
 Neapolitan chord, in music, is a special chord in music.  An example would be (from bottom note upwards): D flat-F-B if followed by C-E-(G)-C
 Neapolitan Mastiff, a big breed of dog
 Neapolitan piastra, an old currency (money) which used to be used in south Italy
 Neapolitan sauce, a kind of tomato-based sauce used in Italian cooking.

es:Napolitano