Main Entry: fis·tu·la

Pronunciation: \ˈfis(h)-chə-lə, British also ˈfis-tyu̇-lə\

Function: noun

Inflected Form(s): plural fis·tu·las or fis·tu·lae \-lē also -lī\

1 : an abnormal passage that leads from an abscess or hollow organ or part to the body surface or from one hollow organ or part to another and that may be surgically created to permit passage of fluids or secretions <a congenital tracheoesophageal fistula> <an arteriovenous fistula was reconstructed in the right arm for dialysis—Pasteur Rasuli et al>
2 : fistulous withers