cath·e·ter /ˈkæθətɚ/
 導尿管,尿液管,導管
 cath·e·ter /ˈkæθətɚ, ˈkæθtɚ/ 名詞
 導管
 Cath·e·ter n.  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.
 Eustachian catheter. See under Eustachian.
 Prostatic catheter, one adapted for passing an enlarged prostate.
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 catheter
      n : a thin flexible tube inserted into the body to permit
          introduction or withdrawal of fluids or to keep the
          passageway open