fistula
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 词源late Middle English: from Latin, ‘pipe, flute, fistula’. Compare with fester.