D defs.my
Entry 1 sense Webster, 1913

Jack Ketch

/jăk kĕch/ · Jack· Ketch · IPA
01 A public executioner, or hangman.
  1. 1.
    A public executioner, or hangman.[Eng.]
    “The manor of Tyburn was formerly held by Richard Jaquett, where felons for a long time were executed; from whence we have Jack Ketch.” — Lloyd's MS., British Museum.
    “[Monmouth] then accosted John Ketch, the executioner, a wretch who had butchered many brave and noble victims, and whose name has, during a century and a half, been vulgarly given to all who have succeeded him in his odious office.” Macaulay.