Source : Webster's Revised Unabridged Dictionary (1913)

Vandalism \Van"dal*ism\, n.
   The spirit or conduct of the Vandals; ferocious cruelty;
   hostility to the arts and literature, or willful destruction
   or defacement of their monuments.

Source : WordNet®

vandalism
     n : willful wanton and malicious destruction of the property of
         others [syn: {hooliganism}, {malicious mischief}]