from
The Collaborative International Dictionary of English v.0.48
Catheter \Cath"e*ter\, n. [L., fr. Gr. ? a thing let down or put
in, catheter, fr. ? to send down, to let down; ? + ? to
send.] (Med.)
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.
[1913 Webster]
{Eustachian catheter}. See under {Eustachian}.
{Prostatic catheter}, one adapted for passing an enlarged
prostate.
[1913 Webster] Catheterism