Měch (gender unknown)
air reservoir: flexible (usually of animal skin), ready for the insertion of stocks
NB: ➺ homonyms, &c.
Made of tanned leather, dyed black, a colour considered dignified, and therefore appropriate for wedding processions.
Raupp, Jan: Der sorbische Dudelsack. In: The bagpipes in Europe, 1 (1976), p.34.
Мука, Эрнестъ [Muka, Ernest; also known as Arnošt Muka; German name: Karl Ernst Mucke]: Словарь нижне-лужицкаго языка = Słownik dołnoserbskeje rěcy [Dictionary of the Lower Silesian language]. Petrograd [St. Petersburg], 1921, p.874.
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), p.49¹ (»Sumrlok*); *NB: ➺ my remarks to Kegdy for the confusion about the name Sumrlok.