noun / verb
sleep
SLEEP/sliːp/
Resting in a state of reduced awareness.
The man sleeps on his side with his cheek against the pillow.

Etymology
Old English slæpan described both bodily sleep and dormancy or inactivity. The modern sense preserves the bodily meaning within that broader idea of suspended activity.
In context
Borman never wavered in his insistence that the crew go to sleep a few minutes later Lovell and Anders had gone quiet and were finally resting
More examples
- A good night's sleep helps me feel refreshed.
- I slept through the storm last night.
- The cabin sleeps six people comfortably.
Forms
sleep · sleeps · slept · sleeping
sleepy adjective — Feeling tired and ready to sleep.
sleeper noun — A person who is sleeping.