Catheter /(?)/

Cath·e·ter

Catheter

n.
  1. The name of various instruments for passing along mucous canals, esp. applied to a tubular instrument to be introduced into the bladder through the urethra to draw off the urine. (Med.)

Phrases & Compounds
Eustachian catheter
See under Eustachian.
Prostatic catheter
one adapted for passing an enlarged prostate.