Chiavettu (m)
(with) definite article: u [lu?]central joint of chanter, with keyhole
From "chiave" [key]; Central piece of the Trummuni (with key); It is provided with a metal ring, through which the Cuddara runs.
Bonanzinga, Sergio: La zampogna a chiave in Sicilia. In: La zampogna: gli aerofoni a sacco in Italia (2005), II, p.193, 202*.