Chambrage (m)
(with) definite article: lesound enhancing end of a chanter
From "chambrer" [to scoop/hollow/drill out]; Term used for the internal shape (a curved funnel-shaped cone, serving as a rudimentary "bell" at the lower end of a chanter), to which, according to Blanc, "the cabretaires traditionally attach a great importance".
Blanc, Bernard: Cabrettes à l'étude. Description technique de la cabrette. In: Ricros (et al.): La cabrette… (2017), p.598 [2x].
ws (linguistics [➺ Dictionaries, &c.])