汉语翻译：
n. 警戒, 监视, 守夜
【医】 不眠, 警醒英语解释：
名词 vigil:

a period of sleeplessness

the rite of staying awake for devotional purposes (especially on the eve of a religious festival)同义词：watch

a purposeful surveillance to guard or observe同义词：watch

例句：

The detectives resumed their vigil at the house.侦探们又开始在那楝房子警戒了。

One who keeps vigil, as at a sick person's bedside.护理者如在病人身旁等看护的人

She kept an all-night vigil by the patient's bedside.她整夜守在病人旁边。

详细解释：
vig.il
n.（名词）
A watch kept during normal sleeping hours.
守夜，值夜：在正常睡眠时间里的监视
The act or a period of observing; surveillance.
观察；警戒：观察或监视的行为或时间
The eve of a religious festival as observed by devotional watching.
守夜：宗教节日的前夕，通过虔诚的守夜庆祝
Often vigils Ritual devotions observed on the eve of a holy day.
常作 vigils 在宗教节日前的祈祷
来源：
Middle English vigile [a devotional watching]
中古英语 vigile [虔诚的守夜]
from Old French
源自 古法语
from Latin vigilia [wakefulness, watch]
源自 拉丁语 vigilia [不眠，监视]
from vigil [awake] * see weg-
源自 vigil [醒过来] *参见 weg-

vigil