► sleep the natural state of resting your mind and body, when your eyes are closed and you do not notice anything happening around you: · I hardly got any sleep at all last night.· He woke suddenly from a deep sleep.
► slumber/slumbers literary sleep: · She fell into an uneasy slumber.· He awoke from his slumbers.
► shut-eye informal especially humorous sleep: · I really need to get some shut-eye.
► doze a period in which you sleep lightly, especially when you are not in your bed: · Edward was so tired he fell into a doze on the settee.
► snooze informal a short period when you sleep lightly, especially when you are not in your bed: · He decided to have a snooze on the sofa while he was waiting for the others to get ready.
► nap a short sleep, especially during the day: · He’s taking a nap.· Helen put the baby down for a nap after lunch.
► forty winks informal a short sleep, especially during the day: · I’m just going to have forty winks.· I felt a lot better after I had had forty winks.
a very short sleep: 
I felt a lot better after I had forty winks.