名詞 fistula:

1. a chronic inflammation of the withers of a horse
   同義詞：fistulous withers
2. an abnormal passage leading from a suppurating cavity to the body surface
   同義詞：sinus

fis.tu.la

n.（名詞）
【復數(shù)】 fis.tu.las 或 fis.tu.lae [-lô.]
An abnormal duct or passage resulting from injury, disease, or a congenital disorder that connects an abscess, a cavity, or a hollow organ to the body surface or to another hollow organ.
瘺，瘺管：由于受傷、疾病或先天性變形引起的把膿腫、腔洞或空器官同身體或其它空器官連結(jié)起來的病變的通道

來源：
Middle English
中古英語
from Latin
源自 拉丁語