Qantas, for one, breathes through it (6)
I believe the answer is:
airway
(Other definitions for airway that I've seen before include "Vent; flight route" , "Respiratory tract" , "Ventilation passage" , "breathing space" , "radio channel" .)
I believe the answer is:
airway
(Other definitions for airway that I've seen before include "Vent; flight route" , "Respiratory tract" , "Ventilation passage" , "breathing space" , "radio channel" .)