Assoprete (m)
(with) definite article: otube through which the bag of a mouth-blown bagpipe, &c. is inflated
From "soprar" [to blow]; It is provided with a valve (válvula), that prevents air from escaping; NB: ➺ Asoplador.
Veiga de Oliveira, Ernesto: Instrumentos musicais populares portugueses [1966]. Lisboa, 1982 (2), p.322.