Sumer (m)
(with) definite article: derProbably related to "summen" [to buzz], and, accordingly, possibly the term for the drone(s); NB¹: According to Klauser an old German word that could be associated with the instrument; NB²: Compare Summer; NB³: Klauser also mentions the term "Sumber", but fails to add a definition, which renders it impossible to fathom its meaning and function.
Klauser, Urs: Die Sackpfeife in der Schweiz. In: Utriculus IV;1 (13), gennaio/marzo 1995, p.8.