[trey-kee-uh
l or, especially Brit., truh-kee-uhl] 
| 1. | Anatomy, Zoology. pertaining to or connected with the trachea or tracheae. |
| 2. | Botany. of the nature of or composed of tracheae or vessels. |
| tra·che·a (trā'kē-ə) n. pl. tra·che·ae (-kē-ē') or tra·che·as
[Middle English trache, from Medieval Latin trāchēa, from Late Latin trāchīa, from Greek (artēria) trākheia, rough (artery), trachea (as opposed to the smooth vessels that carried blood and not air), feminine of trākhus, rough.] tra'che·al adj. |