sack 2 
(săk)
(săk)tr.v. sacked, sack·ing, sacks
To rob (a town, for example) of goods or valuables, especially after capture.
n.
The looting or pillaging of a captured city or town.
[Probably from French (mettre à) sac, (to put in) a sack, from Old French sac, sack, from Latin saccus, sack, bag; see SACK1.]