Oiro (m)
(with) definite article: il [l']air reservoir: flexible (usually of animal skin), ready for the insertion of stocks
From Casimiro Zalli, »Dizionario piemontese italiano, latino e francese«, ed. seconda, …, vol. 2 (Carmagnola, 1830); NB¹: According to Zalli, Mangè com'un oiro translates as "gonfiar [sic] l'otre" [to inflate the bag]; NB²: ➺ homonym.
Made of a ram skin.
Utriculus, nuova serie XVI (54), II semestre 2017, Miscellanea zampognara, p.75: “La piva piemontese chiamata oiro” (»Zalli, p.109).