marauder

1. N-COUNT If you describe a group of people or animals as marauders, you mean they are unpleasant and dangerous, because they wander around looking for opportunities to steal or kill. 强盗; 劫掠者; 攫食的动物[文学性]

They were raided by roaming bands of marauders. 他们遭到了流窜作案的抢劫团伙的袭击。