moor-ill
/ˈmʊərɪl/ /ˈmɔːrɪl/(also muir-ill, merril, mooral) Chiefly Scottish and Irish English (northern ). Now historical
noun
Disease seen in livestock (especially cattle) grazing on moorland, or attributed to this; especially (a) redwater (bovine babesiosis); (b) a (supposed) form of enteritis often accompanied by muscular stiffness and grunting respiration.
Origin
Mid 16th century. From moor + ill.