From The Collaborative International Dictionary of English v.0.48 [gcide]:
Catheter \Cath"e*ter\, noun [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.
From WordNet (r) 3.0 (2006) [wn]:
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