fis·tu·la
noun/ˈfɪstʃələ/
/ˈfɪstʃələ/
(medical)- an opening between two organs of the body, or between an organ and the skin, that would not normally exist, caused by injury, disease, etc.
瘘；瘘管 Word Originlate Middle English: from Latin, ‘pipe, flute, fistula’. Compare with fester.