Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun fistula

2 senses of fistula

Sense 1
fistulous withers, fistula -- (a chronic inflammation of the withers of a horse)
       => animal disease -- (a disease that typically does not affect human beings)

Sense 2
fistula, sinus -- (an abnormal passage leading from a suppurating cavity to the body surface)
       => passage, passageway -- (a path or channel or duct through or along which something may pass; "the nasal passages")