louping ill

noun
loup·​ing ill | \ ˈlau̇-piŋ- How to pronounce louping ill (audio) , ˈlō- How to pronounce louping ill (audio) \

Medical Definition of louping ill

: a variable tick-borne viral disease that occurs especially in sheep and other domestic animals and sporadically in humans, that primarily affects the central nervous system, and is caused by a flavivirus (species Louping ill virus of the genus Flavivirus)