wakefulness maintained for any reason during the normal hours for sleeping.
a watch or a period of watchful attention maintained at night or at other times: The nurse kept her vigil at the bedside of the dying man.
a period of wakefulness from inability to sleep.
Ecclesiastical.
a devotional watching, or keeping awake, during the customary hours of sleep.
Sometimes vigils.a nocturnal devotional exercise or service, especially on the eve before a church festival.
the eve, or day and night, before a church festival, especially an eve that is a fast.
Origin of vigil
1200–50; Middle English vigil(i)e<Anglo-French <Medieval Latin vigilia eve of a holy day, special use of Latin vigilia watchfulness, equivalent to vigil sentry + -ia-y3
Two church members stood outside the Church, embracing each mourner as they walked to the vigil.
Sandy Hook, Connecticut: A Small Town Devastated|Eliza Shapiro, Matthew Zeitlin|December 15, 2012|DAILY BEAST
The "Demoiselle" still kept her vigil, changing her patient's pillow, holding a cup of water to his lips.
War Days in Brittany|Elsie Deming Jarves
Thomasine observed the vigil, and even Boodles watched and wished the dark gone.
Furze the Cruel|John Trevena
The parson is feeling sick at heart with his long night's vigil, and as though he could hardly face the dreadful end.
It Never Can Happen Again|William De Morgan
An hour passed and Jack was becoming weary of his vigil, especially in view of the uncertainty of the coming of his quarry.
The Boy Scouts on the Yukon|Ralph Victor
It was then about noon, and having an engagement in Court, I was compelled to relinquish my vigil.
Spies of the Kaiser|William Le Queux
British Dictionary definitions for vigil
vigil
/ (ˈvɪdʒɪl) /
noun
a purposeful watch maintained, esp at night, to guard, observe, pray, etc
the period of such a watch
RC ChurchChurch of Englandthe eve of certain major festivals, formerly observed as a night spent in prayer: often marked by fasting and abstinence and a special Mass and divine office
a period of sleeplessness; insomnia
Word Origin for vigil
C13: from Old French vigile, from Medieval Latin vigilia watch preceding a religious festival, from Latin: vigilance, from vigil alert, from vigēre to be lively