Write寝 (qǐn)(to sleep) in Chinese character

 寝 (qǐn)

Origin:

在一间房屋里有一把扫帚，表示把屋子打扫干净好让人休息。“寝”的本义是“躺着休息或睡觉”，也指“卧室”。
The character “寝” appears as a broom (扫帚) inside a room, signifying that the room has been cleaned and made ready for people to rest inside. As such, the original meaning of “寝” is to rest or sleep, and it can also refer to a bedroom.

Meaning：

to sleep, bedroom

Words：
寝室：qǐnshì / bedroom 安寝：ānqǐn /to sleep peacefully 寿终正寝：shòu zhōng zhèng qǐn / to die a natural death 寝食难安：qǐn shí nán ān / to keep somebody awake at night with worry

Sentences：
1、Zài Zhōngguó，xuésheng jìnrù dàxué zhīhòu yìbān zhùzài xuéxiào de xuésheng qǐnshì lǐ.
在中国，学生进入大学之后一般住在学校的学生寝室里。
In China, students often live in on-campus dormitories after they enter university.

2、Tā zhěngtiān dānxīn kǎoshì jiéguǒ，qǐn shí nán ān.
他整天担心考试结果，寝食难安。
Worrying about his test scores keeps him up all night.