ketch /ˈkɛʧ/
  一種雙桅船
  Ketch n.  Naut.
  1. An almost obsolete form of sailing vessel, with a mainmast and a mizzenmast, -- usually from one hundred to two hundred and fifty tons burden.
  Bomb ketch. See under Bomb.
  Ketch, n. A hangman. See Jack Ketch.
  Ketch, v. t.  To catch. [Now obs. in spelling, and colloq. in pronunciation.]
     To ketch him at a vantage in his snares.   --Spenser.
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  ketch
       n : a sailing vessel with two masts; the mizzen is forward of
           the rudderpost