Petnjača (f)
hook, &c. at the lower end of the bellows, to be shoved behind the waist strap
From "peta" [heel] ?; Extension of the lower cheek of the bellows, shoved behind the waist belt when playing; Ferdinandovac.
Širola, Božidar: Sviraljke s udarnim jezičkom [Aerophones with a beating tongue]. Zagreb, 1937, p.207 (»Puljak), 210.
Gojković, Andrijana: Narodni muzički instrumenti [Folk musical instruments]. Beograd, 1979 (»Širola [129]).