Related Clues:

• Windpipe, e.g.
• Neighbor of the larynx
• Vent
• Flight fleet
• Airway
• Breathing space
• Inner tube?
• Trachea, e.g.
• Plane's passage
• Breathing tube
• Respiration aid
• American or Delta route
• It's closed by the epiglottis
• Bronchoscopist's view
• Choking spot