Source : Webster's Revised Unabridged Dictionary (1913)

Pillager \Pil"la*ger\, n.
   One who pillages. --Pope.

Source : WordNet®

pillager
     n : someone who takes spoils or plunder (as in war) [syn: {plunderer},
          {looter}, {spoiler}, {despoiler}, {raider}, {freebooter}]