| Noun | 1. | trachea - membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchiepiglottis - a flap of cartilage that covers the windpipe while swallowing upper respiratory tract - the nose and throat and trachea cartilaginous tube - a duct with cartilaginous walls |
| 2. | trachea - one of the tubules forming the respiratory system of most insects and many arachnidstubule - a small tube respiratory system, systema respiratorium - the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing |