n.

1. 守夜；警戒；监视[C][U]
   All night the mother kept vigil over the sick child.

   母亲通夜守护在病儿的身边。

2. 宗教节日前夕的祈祷（式）[P]

n.

1. a period of staying awake during the time usually spent asleep, especially to keep watch or pray.
2. (in the Christian Church) the eve of a festival or holy day as an occasion of religious observance.
   ▸ (vigils) nocturnal devotions.
3. a stationary, peaceful demonstration in support of a cause.