Fischiarillo (m)
(with) definite article: ilcollective term for each of the sounding pipes (i.e. chanter(s) & drone(s)) of 1 instrument [?]
Indubitably derived from "fischiare" [to whistle (of birds)], this term is used (as a homonym) for each of the 3 sounding pipes (i.e. chanters, and drone).
Gioielli, Mauro: Le zampogne nel Molise. In: La zampogna: gli aerofoni a sacco in Italia (2005), I, p.229.
ws (linguistics [➺ Dictionaries, &c.])