- 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. - Hence, devotional watching; waking for prayer, or other
religious exercises. - Originally, the watch kept on the night before a feast. - Later, the day and the night preceding a feast. - A religious service performed in the evening preceding a
feast.