The Collaborative International Dictionary of English v.0.48:

despoliation \de*spo`li*a"tion\, n. [L. despoliatio. See
   Despoil.]
   A stripping or plundering; spoliation. --Bailey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

despoliation
    n 1: the act of stripping and taking by force [syn: spoil,
         spoliation, spoilation, despoilation, despoilment,
         despoliation]