a shared sleeping room in an institution like a school or factory

to go to sleep or go to bed (literary)

to skip sleep and meals; to be completely wrapped up in one's work

the private living quarters or bedroom of an emperor or royal family member within a palace

to die of old age in one's own bed at a ripe age

extremely worried and troubled, to the point of being unable to eat or sleep peacefully

tomb (of a king or emperor)

bedding; bedclothes

to sleep peacefully

to eat someone's flesh and sleep on their hide; to harbor extreme hatred or a desire for sworn revenge

to forgo sleep due to being busy or focused on something

the practice of sleeping on straw with a clod of earth for a pillow, representing the traditional etiquette for a son mourning his parents

to neglect sleep and food

to sleep on one's armor with a spear as a pillow; to maintain a high state of combat readiness at all times

Zai Yu sleeps by day (idiom); refers to the story in the Analects where Confucius scolds his student for sleeping during lectures.