The Collaborative International Dictionary of English v.0.48:

Abomination \A*bom`i*na"tion\, n. [OE. abominacioun, -cion, F.
   abominatio. See Abominate.]
   1. The feeling of extreme disgust and hatred; abhorrence;
      detestation; loathing; as, he holds tobacco in
      abomination.
      [1913 Webster]

   2. That which is abominable; anything hateful, wicked, or
      shamefully vile; an object or state that excites disgust
      and hatred; a hateful or shameful vice; pollution.
      [1913 Webster]

            Antony, most large in his abominations. --Shak.
      [1913 Webster]

   3. A cause of pollution or wickedness.
      [1913 Webster]

   Syn: Detestation; loathing; abhorrence; disgust; aversion;
        loathsomeness; odiousness. --Sir W. Scott.
        [1913 Webster]

WordNet (r) 3.0 (2006):

abomination
    n 1: a person who is loathsome or disgusting
    2: hate coupled with disgust [syn: abhorrence, abomination,
       detestation, execration, loathing, odium]
    3: an action that is vicious or vile; an action that arouses
       disgust or abhorrence; "his treatment of the children is an
       abomination"