vigil
noun
[ ˈvɪdʒɪl ]
• a period of keeping awake during the time usually spent asleep, especially to keep watch or pray.
• "my birdwatching vigils lasted for hours"
• (in the Christian Church) the eve of a festival or holy day as an occasion of religious observance.
Origin:
Middle English (in vigil (sense 2)): via Old French from Latin vigilia, from vigil ‘awake’.
