The Collaborative International Dictionary of English v.0.48:

Sack \Sack\, v. t. [imp. & p. p. Sacked; p. pr. & vb. n.
   Sacking.] [See Sack pillage.]
   To plunder or pillage, as a town or city; to devastate; to
   ravage.
   [1913 Webster]

         The Romans lay under the apprehensions of seeing their
         city sacked by a barbarous enemy.        --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sacked
    adj 1: having been robbed and destroyed by force and violence;
           "the raped countryside" [syn: despoiled, pillaged,
           raped, ravaged, sacked]