An inflammatory affection of any mucous membrane, in which there are congestion, swelling, and an altertion in the quantity and quality of mucus secreted; as, catarrh of the stomach; catarrh of the bladder
inflammation of a mucous membrane, especially of the nose and throat, with a discharge
Catarrh is a medical condition in which a lot of mucus is produced in your nose and throat. You may get catarrh when you have a cold. an uncomfortable condition in which your body produces a thick liquid that blocks your nose and throat (catarrhe, from katarrhein )