Glavna mješina (f)
Veliko Vukovje; Oddly, there seems to be no related term (e.g. "sporedna mješina" [subordinate bellows]) for the actual bellows, which is called Sufla.
Širola, Božidar: Sviraljke s udarnim jezičkom [Aerophones with a beating tongue]. Zagreb, 1937, p.207 (»Kabljanac).