From Longman Dictionary of Contemporary Englishsleepsleep1 /sliːp/ ●●● S1 W2 verb (past tense and past participle slept /slept/) [intransitive] 1 HBHSLEEPto rest your mind and body, usually at night when you are lying in bed with your eyes closed → asleep I usually sleep on my back. Did you sleep well? He’s lucky because at least he has somewhere to sleep.2 → sleep rough3 → sleep on it4 → sleep tight5 → somebody can sleep easy6 → sleep two/four/six etc7 → let sleeping dogs lie8 literaryQUIET if a village, house etc sleeps, it is very quiet during the nightCOLLOCATIONSadverbssleep wellI haven’t been sleeping well lately.sleep badlyEleanor slept badly that night.sleep soundly/deeply (=in a way that means you are not likely to wake)Within seconds, Maggie was sleeping soundly.sleep peacefullyCelia slept peacefully beside him.sleep uneasily (=not sleep well, because you are worried)That night I slept uneasily, anxious about the meeting the next day. sleep fitfully literary (=sleep badly, waking up after short periods, especially because you are worried)She slept fitfully, her mind filled with images of Jack’s face.barely/hardly sleep (=to not sleep well)I’d hardly slept the night before the wedding.sleep late (=not wake up until late in the morning)She had slept late; it was already eleven.phrasescan’t/couldn’t sleepI went to bed, but I couldn’t sleep.be unable to sleepHe lay down but was unable to sleep.have trouble sleeping (=to not sleep well)Why do so many elderly people have trouble sleeping?sleep like a log (also sleep like a baby) informal (=sleep very well)I was exhausted and slept like a log.not sleep a wink informal (=not sleep at all)I didn’t sleep a wink last night.THESAURUSsleep to rest your mind and body with your eyes closed. Sleep is usually used when talking about how long, how deeply, or where someone sleeps. When saying that someone is not awake, you use be asleepMost people sleep for about eight hours.He slept downstairs.Did you sleep well?be asleep to be sleepingThe baby’s asleep – don’t wake her.He was fast asleep (=completely asleep) by the time I got home.oversleep to sleep for longer than you intended so that you wake up late in the morningI overslept and was late for work.take a nap (also have a nap especially British English) (also have forty winks informal) to sleep for a short time during the dayI think I’ll have a nap.She had been awake all night and was looking forward to taking a nap.have/take a snooze informal to sleep for a short time, especially in a chair, not in a bedI think I’ll have a quick snooze.doze to sleep lightly, for example in a chair, and be easily wokenI wasn’t really asleep – I was just dozing.I must have dozed off (=started sleeping) halfway through the film.kip British English informal to sleep somewhere, especially somewhere that is not your home – a very informal useI kipped at my mate’s for a couple of days.Is it alright if I kip on the floor? → sleep around → sleep in → sleep something ↔ off → sleep over → sleep through → sleep together → sleep with somebody→ See Verb table
Examples from the Corpussleep• Is the baby sleeping all night now?• Charlotte was sleeping and her mother didn't want to wake her.• But it was hardly like sleeping at all.• I'm so tired, I could sleep for a week.• Expect to pay $ 115 for a cabin that sleeps four during peak season.• Poor old Chris was sleeping in his car and living off bread and water when he found he'd won £250,000.• Smitty went to sleep in the back.• I normally sleep on my back.• If my snoring is that bad, I'll go down and sleep on the sofa.• I had slept only a few hours, but I had to get up early.• What happens when we sleep or are unconscious?• You can rent a country cottage that sleeps six from as little as £300 a week.• None of us slept very easily, I have to say.• I didn't sleep very well last night, so I couldn't concentrate on the exam.