catarrh (n.) Look up catarrh at Dictionary.com
late 14c., from Medieval Latin catarrus, from Late Latin catarrhus, from Greek katarrhous "a catarrh, a head cold," literally "a flowing down," earlier kata rrhoos, ultimately from kata "down" (see cata-) + rhein "to flow" (see rheum). Related: Catarrhalcatarrhous.