The Collaborative International Dictionary of English v.0.48:

Butcher \Butch"er\, v. t. [imp. & p. p. Butchered; p. pr. &
   vb. n. Butchering.]
   1. To kill or slaughter (animals) for food, or for market;
      as, to butcher hogs.
      [1913 Webster]

   2. To murder, or kill, especially in an unusually bloody or
      barbarous manner. --Macaulay.
      [1913 Webster]

            [Ithocles] was murdered, rather butchered. --Ford.
      [1913 Webster]

   3. to bungle badly; to botch; -- used also when an object is
      damaged (literally or figuratively) in an activity; as,
      the new choir butchered the hymn.

   Syn: mangle. [PJC] butcher-bird
        butcher bird

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "butchered":
   botched, bungled, castrated, cut short, docked, fumbled, garbled,
   hashed, ill-advised, ill-considered, ill-contrived, ill-devised,
   ill-done, ill-executed, ill-managed, impolitic, lopped, mangled,
   misconducted, misdirected, misguided, mismanaged, muffed, murdered,
   mutilated, negligent, spoiled, truncated