vigilante

名词 vigilante:

1. member of a vigilance committee
   同义词：vigilance man

1. The Police Department says it opposes vigilante justice, but officers on the beat and neighborhood residents say they are enthusiastic about the company's tactics.
   警察局说该局反对非执法人员私自执法，可是辖区警员及当地居民对该［警卫］公司的策略颇感兴趣。

vig.i.lan.te

n.（名词）
One who takes or advocates the taking of law enforcement into one`s own hands.
警戒行动者：维持或者支持把法律的强制实施控制在自己手中的人
A member of a vigilance committee.
警戒会的成员

来源：
Spanish [watchman, vigilante]
西班牙语 [看守，警卫]
from Latin vigil3ns vigilant- [present participle of] vigil3re [to be watchful]
源自 拉丁语 vigil3ns vigilant- [] vigil3re的现在分词 [保持警惕]
from vigil [watchful] * see weg-
源自 vigil [警惕的] *参见 weg-

【引伸】
vig.ilan.tism