air passage

Definitions

General Science

  • noun a set of tubes, formed of the nose, pharynx, larynx, trachea and bronchi, which takes air to the lungs

Medical

  • noun any tube which takes air to the lungs, e.g. the nostrils, pharynx, larynx, trachea and bronchi
http://www.dictionarycentral.com/definition/air-passage.html