Definition from Wiktionary, the free dictionary
Neapolitan (not comparable)
- Pertaining to Naples.
- Describing an ice cream combination of the flavours chocolate, vanilla, and strawberry in order. Also called neapolitan ice cream.
pertaining to Naples
Neapolitan (plural Neapolitans)
- An inhabitant or resident of Naples.
inhabitant or resident of Naples
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Translations to be checked
Proper noun 
language of Naples, Italy