[{"Bold_text": "noun", "List Items": ["Pathology.a narrow passage or duct formed by disease or injury, as one leading from an abscess to a free surface, or from one cavity to another.", "Surgery.an opening made into a hollow organ, as the bladder or eyeball, for drainage.", "Veterinary Pathology.any of various suppurative inflammations, as in the withers of a horsefis?tulous with?ers,characterized by the formation of passages or sinuses through the tissues and to the surface of the skin.", "Obsolete.a pipe, as a flute."]}]