What does "bronchial" mean?

Bronchial: Belonging to the bronchi and their ramifications in the lungs. Bronchial arteries, branches of the descending aorta, accompanying the bronchia in all their ramifications. -- Bronchial cells, the air cells terminating the bronchia. -- Bronchial glands, glands whose functions are unknown, seated along the bronchia. -- Bronchial membrane, the mucous membrane lining the bronchia. -- Bronchial tube, the bronchi, or the bronchia.