the rite of staying awake for devotional purposes (especially on the eve of a religious festival)
source: WordNet 3.0
a purposeful surveillance to guard or observe
source: WordNet 3.0
Abstinence from sleep, whether at a time when sleep is customary or not; the act of keeping awake, or the state of being awake, or the state of being awake; sleeplessness; wakefulness; watch.
