Nappa (f)
(with) definite article: latop piece of the drone (sound resonator)
Regional term; NB: ➺ Nappa chanter bell), and Nnappa i canta (chanter bell (Sicily)).
Gala, Giuseppe Michele: La zampogna in Campania. In: La zampogna: gli aerofoni a sacco in Italia (2005), II, p.11.