Neapolitan a. : Of of pertaining to Naples in Italy.

Neapolitan n. : A native or citizen of Naples.

Example:
What is the easiest way to make the Neapolitan (Chocolate, Vanilla, Strawberry) ice cream?

Taxonomy
Neapolitan, English, vowels, dialects, Neapolitan language, language, Italian, pronunciation, consonant, masculine and feminine, initial consonant, neuter, definite article, Neapolitan dialect, spelling, ppane, schwa, trigger.

Defination from the web:
Neapolitan dialects are distributed throughout most of continental southern Italy, historically united during the Kingdom of Naples and the Kingdom of the Two Sicilies. ... of this linguistic group include Neapolitan proper, Irpino, Cilentano, Ascolano, Teramano, Abruzzese ...