n.

a natural and periodic state of rest during which consciousness of the world is suspended

"he didn't get enough sleep last night"

同義詞：slumber

a torpid state resembling deep sleep

同義詞：sopor

a period of time spent sleeping

"he felt better after a little sleep"

同義詞：nap

euphemisms for death (based on an analogy between lying in a bed and in a tomb)

"they had to put their family pet to sleep"

同義詞：resteternal resteternal sleepquietus

Sustained performance with short evening and morning sleeps.
Method and device for sensing whether occupant sleeps inside vehicle
While America Sleeps: Self-Delusion, Military Weakness, and the Threat to Peace Today
The Clay Sleeps: An Ethno-Archaeological Study of Three African Potters.
This is the 'couch' Elon Musk sleeps on when he works late at Tesla, and the Internet is aghast
'Dharma & Greg' Sleeps with the Fishes
Occurrence of ‘microsleeps’ during daytime sleep onset in normal subjects
Detecting behavioral microsleeps from EEG power spectra
Losing the struggle to stay awake: Divergent thalamic and cortical activity during microsleeps
The World of Policing