Webster's Revised Unabridged Dictionary · 1913

Vigil

Vigil , noun

[Old English vigile, Latin vigilia, from vigil awake, watchful, probably akin to English wake: compare French vigile. See Wake, v. i., and compare Reveille, Surveillance, Vedette, Vegetable, Vigor.]

1.
Abstinence from sleep, whether at a time when sleep is customary or not; the act of keeping awake, or the state of being awake; sleeplessness; wakefulness; watch.
Worn out by the labors and vigils of many months. — Macaulay
Nothing wears out a fine face like the vigils of the card table and those cutting passions which attend them. — Addison
2.
Hence, devotional watching; waking for prayer, or other religious exercises.
So they in heaven their odes and vigils tuned. — Milton
Be sober and keep vigil, The Judge is at the gate. — Neale (Rhythm of St. Bernard)
3.
(a) (Ecclesiastical) Originally, the watch kept on the night before a feast.
(b)
(Ecclesiastical) Later, the day and the night preceding a feast.
He that shall live this day, and see old age, Will yearly on the vigil feast his neighbors, And say, “To-morrow is St. Crispian.” — Shakespeare
(c)
A religious service performed in the evening preceding a feast.
Collocations (1)
Vigils of flowers or Watchings of flowers (Botany) , a peculiar faculty belonging to the flowers of certain plants of opening and closing their petals at certain hours of the day. [Rare]