Naduelka (f)
(with) definite article: Naduelkataoriginal: надуелка(та)
tube through which the bag of a mouth-blown bagpipe, &c. is inflated
From надувам (nadùvam [to inflate / swell]); Rhodope dialect.
Le Gonidec, Marie-Barbara: La cornemuse bulgare. In: Pastel 30 (Toulouse, 1996), p.25.