Ljukna (f)
plural: Ljukneoriginal: (љукна, љукне)
each of the tone producing holes of a chanter or semidrone
Probably an incorrect spelling (of Luknja [?]) in Kuhač; NB: Not encountered in other sources (Not even in Širola, nor in Gojković)...
Kuhač, Franjo Š. [Šaver]: Prilog za poviest glasbe južnoslovjenske: Gajde [Contribution to the history of South Slavic music: Bagpipes]. In: Rad jugoslavenske akademije znanosti i umjetnosti, knjiga L (Zagreb, 1879): ljukne: p.92 (➺ ljuke), 94 (➺ rupice).