1) Cartilaginous tube 2) Kind of anatomical tube 3) Kind of tube 
• (a.) Belonging to the bronchi and their ramifications in the lungs.
(L. bronchialis) pertaining to one or more bronchi.
Having to do with the bronchi, which are the larger air passages of the lungs, including those that lead from the trachea (windpipe) to the lungs and those within the lungs.
<anatomy> Pertaining to one or more bronchi. ... Origin: L. Bronchialis ... (13 Nov 1997) ... 
(brong´ke-әl) pertaining to or affecting one or more bronchi.
Bron'chi·al adjective [ Confer French bronchial . See Bronchia .] (Anat.) Belonging to the bronchi and their ramifications in the lungs. Bronchial arteries , 
Type: Term Pronunciation: brong′kē-ăl Definitions: 1. Relating to the bronchi.
An herb or substance that relaxes constricting spasms and opens the bronchi or upper part of the lungs, thus improving respiration. 
[adj] - relating to or associated with the bronchi
adjective relating to or associated with the bronchi; `bronchial tubes`; `bronchial pneumonia`
pertaining to the bronchia or bronchi.