| n. | 1. | |
| 1. | (Anat.) The windpipe. See Illust. of Lung. | |
| 2. | (Zool.) One of the respiratory tubes of insects and arachnids. | |
| 3. | (Bot.) One of the large cells in woody tissue which have spiral, annular, or other markings, and are connected longitudinally so as to form continuous ducts. |
| Noun | 1. | trachea - membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi Synonyms: windpipe |
| 2. | trachea - one of the tubules forming the respiratory system of most insects and many arachnids |