- sleep: a natural and periodic state of rest during which consciousness of the world is suspended; "he didn't get enough sleep last night"; "calm as a child in dreamless slumber"
- sleep: be asleep
- a dormant or quiescent state
- Season three of Smallville, an American television series, began airing on October 1, 2003. The series recounts the early adventures of Kryptonian Clark Kent as he adjusts to life in the fictional town of Smallville, Kansas, during the years before he becomes Superman. ...
- a very light state of sleep, almost awake; To be in a very light state of sleep, almost awake; To be inactive