1) Windpipes 
• (pl. ) of Trachea
Breathing tubes of insects; tracheae open into the spiracles on the abdomen's surface.
The larger respiratory tubes leading from the spiracles in insects.
Internal tubes through which air is taken for respiration. Vertebrates with lungs have a single trachea carrying air to the lungs, while insects and some other land-living arthropods have a complex network of tracheae carrying air from the spiracles to all parts of the body.
Internal tubes through which air is taken for respiration. Vertebrates with lungs have a single trachea carrying air to the lungs, while insects and some other land-living arthropods have a complex network of tracheae carrying air from the spiracles to all parts of the body.
The air tubes in insects; in spiders, tubular respiratory organs of different origin; by many thought to be modified book lungs.
Tubes through which air is carried around the body and which open at the spiracles.