Usciatore (gender unknown)
(with) definite article: ? [?]: l’tube through which the bag of a mouth-blown bagpipe, &c. is inflated
Made of cane (Arundo donax), wood, bone, or metal; It may be provided with an inlet-valve made of leather or rubber, but many pipers use their tongue to prevent air from returning; According to Tucc,i it usually "consists of 2 pieces with a mortise-joint" [i.e. tenon and mortise; ws], but her description clearly implies that the 2nd piece must be its stock, the name of which she fails to mention, however.
Tucci, Roberta: Le zampogne in Calabria. In: La zampogna: gli aerofoni a sacco in Italia (2005), II, p.98.