Curella (f)
(with) definite article: ? [a / la?]only piece (or butt piece of a composed drone), lodging the reed, with a tenon for insertion into the stock
According to Sarica, the "uppermost section of the drones".
Sarica, Mario: La zampogna a paro siciliana [Title on 1st text page: La zampogna a paro in Sicilia]. In: La zampogna: gli aerofoni a sacco in Italia (2005), II, p.231 (note 32 [➺ p.155]).