夜伽

Etymology
Compound of.

First cited to a text from 1658.

Noun

 * 1)  watching over someone overnight while they sleep
 * 2)  a person who watches over someone overnight
 * 3)  a woman accompanying a man in sleep
 * 4)  an overnight vigil

Verb

 * 1)  to watch over someone overnight while they sleep
 * 2)  of a woman, to accompany a man in sleep
 * 3)  to hold an overnight vigil