sleep2 S2 W3
the natural state of resting your mind and body, usually at night [↪ beauty sleep]:
I didn't get much sleep last night.
Sometimes Mike has a hard time getting to sleep (=succeeding in starting to sleep).
I couldn't get back to sleep (=sleep again after waking up) after he'd rung.
drift/nod/go off to sleep (=start sleeping)
I'm sorry, I must have dropped off to sleep for a moment.
in your sleep (=while he is sleeping)
Ed often talks in his sleep.
She died in her sleep later that night.
Her eyes were red through lack of sleep.
a few/a couple of/eight etc hours' sleep
She managed on a few hours' sleep a night.
a period when you are sleeping
period of sleeping[singular]
a light/deep sleep
She was woken from a deep sleep by a ring at the door.
You just need a good night's sleep (=a night when you sleep well).
have a sleep British English
Why don't you go and have a sleep?
to start sleeping:
I went to sleep at 9 o'clock and woke up at 6.
It's nothing, go back to sleep (=sleep again after waking up).
if a part of your body goes to sleep, you cannot feel it for a short time because it has not been getting enough blood
to worry about something:
It's a practice game - I wouldn't lose any sleep over it.
to give drugs to a sick animal so that it dies without too much pain - used to avoid saying the word 'kill'
to make someone unconscious before a medical operation by giving them drugs
used to say that someone is able to do something very easily, especially because they have done it many times before:
She knew the music so well she could play it in her sleep.
to sing to someone, move them gently etc until they start sleeping:
The movement of the waves soon lulled us to sleep.
to make someone go to sleep:
The combination of warmth and music sent him to sleep.
if something sends someone to sleep, it is extremely boring
a substance that forms in the corners of your eyes while you are sleeping:
in your eyes[uncountable] informalHBH
She rubbed the sleep from her eyes.