fistula

fis·tu·la  (fsch-l)

n. pl. fis·tu·las or fis·tu·lae (-l)

An abnormal duct or passage resulting from injury, disease, or a congenital disorder that connects an abscess, cavity, or hollow organ to the body surface or to another hollow organ.

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[Middle English, from Latin.]

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fistula [fist-yew-la]

Noun

Pathol a long narrow ulcer [Latin: tube, ulcer]

Thesaurus

Noun	1.	fistula - a chronic inflammation of the withers of a horse fistulous withers animal disease - a disease that typically does not affect human beings
	2.	fistula - an abnormal passage leading from a suppurating cavity to the body surface sinus passageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages"