an abnormal opening between one hollow organ and another or between a hollow organ and the surface of the skin, caused byulceration, congenital malformation, etc
2. obsolete
any musical wind instrument; a pipe
Word origin
C14: from Latin: pipe, tube, hollow reed, ulcer
Examples of 'fistulae' in a sentence
fistulae
This revealed continuing recurrence of piles and evidence of ancient fistulae.