A passage for ventilation between thermal insulation and roof boards.
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(DOD, NATO) A control area or portion thereof established in the form of a corridor marked with radio navigational aids.

1. the passage by which air enters and leaves the lungs.
2. a mechanical device used for securing unobstructed respiration during general anesthesia or other occasions in which the patient is not ventilating or exchanging gases properly. Includes an endotracheal tube and a tracheostomy tube.
1. a clear passageway for air into and out of the lungs. 2. a device for securing unobstructed respiration during general anesthesia or in states of unconsciousness.

The pulmonary airway comprises those parts of the respiratory system through which air flows, conceptually beginning (on inhalation from the external environment) at the nose and mouth, and terminating in the alveoli. It is generally used synonymously with respiratory tract, to avoid sounding overly scientific.
From the mouth or nose, inhaled air passes through the pharynx into the trachea, where it separates into the left and right main bronchi at the carina, situated at the level of the second thoracic vertebra. The main bronchi then branch into large bronchioles, one for each lobe of the lung. Within the lobes, the bronchioles further subdivide some twenty times, ending in clusters of alveoli.
The epithelial surfaces of the airway contain cilia. Inhaled particles adhere to mucus secreted by goblet cells, which is continuously driven outwards by the cilia. The epithelium of the airway also secretes a watery fluid upon which the mucus can ride freely. The production of this fluid is impaired by the disease cystic fibrosis. Macrophages in the airways help promote prophylaxis and prevent infection and contamination, by engulfing bacteria and other inhaled particles.
Certain conditions require tracheal intubation (insertion of a tube) to secure the patency (openness) of the airway. Airway devices are used to assist in tracheal intubation.
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Dansk (Danish)
n. - luftrute, luftkorridor
Nederlands (Dutch)
vliegroute, ventilatiekanaal, vliegtuigmaat- schappij, bepaalde frequentie
Français (French)
n. - voie aérienne, compagnie d'aviation, conduit d'air
Deutsch (German)
n. - Luftstraße, (anat.) Luftröhre, Lüftungsschacht
Ελληνική (Greek)
n. - αεροπορική εταιρία, αεροπορική γραμμή, αεραγωγός
Português (Portuguese)
n. - via (f) aérea, rota (f) aérea
Русский (Russian)
летная дорожка
Español (Spanish)
n. - aerovía, ruta aérea, vía respiratoria, línea aérea, conducto de ventilación, canal de transmisión
Svenska (Swedish)
n. - luftväg, flygbolag
中文(简体)(Chinese (Simplified))
空中航线, 通风孔
中文(繁體)(Chinese (Traditional))
n. - 空中航線, 通風孔
한국어 (Korean)
n. - 항공로, 통풍구, 방송 채널
日本語 (Japanese)
n. - 空気の通りみち, 航空路, 航空会社, 定期航空路, 通風路
العربيه (Arabic)
(الاسم) خط جوي, شركه خطوط جويه, منفذ هواء
עברית (Hebrew)
n. - נתיב אוויר
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