LOUPING ILL Meaning of LOUPING ILL in English [ 'laʊpɪŋɪl ]■ noun a tick-borne viral disease of animals, especially sheep, causing staggering and jumping.OriginME: from loup (dialect var of leap ) + the noun ill . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004