Definitions

1. noun

an abnormal connection or passageway between two epithelial-lined surfaces, especially one that connects an abscess or a cavity with the body surface or with another cavity, and is often caused by disease or injury

“The patient was diagnosed with a fistula that was draining pus from her abscess into the surrounding tissue.”

2. noun

a watercourse, especially one that is artificial or has been diverted from its natural course

“The construction of the canal created a new fistula that diverted water from the original riverbed.”

3. noun

a narrow channel or pipe, especially one that connects two larger pipes or containers

“The plumber had to repair the fistula in the old pipe to prevent water from leaking into the surrounding area.”