Bronchus/ˈbrɑːŋkəs/ Definition 1 of 1Pro Tip 1/3Pair Usage Use 'bronchus' in pairs when referring to both air passages, because we have two lungs. The surgeon examined both the right and the left bronchus. Pro Tip 2/3Medical Context Mainly used in medical or scientific contexts, not in everyday conversation. During the lecture, the doctor detailed the structure of the bronchus. Pro Tip 3/3Latin Origin Knowing its Latin origin may help remember the word; 'bronchus' means windpipe. Bronchitis is the inflammation of the mucous membrane in the bronchus.