Mješina (f)
air reservoir: flexible (usually of animal skin), ready for the insertion of stocks
From "mijeh" [bellows/wineskin/goatskin]; Podravina region (Bjelovar-Križevci area (Kapela; Veliki Raven; Ždralovi); Delovi (parish Novigrad Podravski); Ferdinandovac; Vukosavljevica); Slavonia region (Bektež (➺ Miješ, and Mišina); Veliko Vukovje).
According to Širola, the left front and one hind leg are tied up before pulling the bag inside out; The other hind leg is tied up together with the rear opening of the bag; If, however, the 2nd hind leg isn’t tied up at its base, as usual, the result would be a "sleeve" [?], the function of which I find hard to imagine.
Širola, Božidar: Sviraljke s udarnim jezičkom [Aerophones with a beating tongue]. Zagreb, 1937, p.123 (Bektež; »Kuhač; »Manojlović), 197, 201, 204, 207, 209.
Gojković, Andrijana: Narodni muzički instrumenti [Folk musical instruments]. Beograd, 1979 (Bekteš; »Širola [129]).
Drvodelić, Milan: Croatoserbian-English dictionary / Hrvatskosrpsko-Engleski rječnik. Zagreb, 1961