Coflet (m)
(with) definite article: lemechanical device used to supply the bag with air
Spelling (probably incorrect) in Leydi; According to Habenicht, "introduced in the 17th century".
Leydi, Roberto: La zampogna in Europa. Como, 1979, p.64.
Habenicht, Gottfried: Der Egerländer Dudelsack. In: Jb. f. ostdeutsche Volkskunde 20 (Marburg, 1977), p.216 + note 25 [➺ p.240].