To be slumbering in; -- followed by a cognate object; as, to sleep a dreamless sleep.

In the Tradition different sort of dreamstates are indicated: lucid dreams, dreamless sleep, the sleep of assimilation, the sleep of Alifa, the sleep of Avasha, the rest of Arcana, etc All these states signify states which are only understood by initiates because they correspond with exactly those degrees of Initiation one can not divulge.

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"

euphemisms for death (based on an analogy between lying in a bed and in a tomb); "she was laid to rest beside her husband"; "they had to put their family pet to sleep"

a physical and mental resting state in which a person becomes relatively inactive and unaware of his or her environment.

One of the most widespread misconceptions about birds is that they sleep with their heads tucked under their wings. In fact, the commonest sleeping posture, especially among songbirds, is with the head turned and resting on the back, and the bill tucked under the feathers of the shoulder (i.e., the scapular feathers). During the breeding season, Purple Martins sleep in their martin houses and gourds at night. In late summer and during the rest of their annual life cycle, martins sleep out in the open, on the exposed branches of trees, or on the pipes of South American oil refineries.

A form of rest where awareness of the surroundings is temporarily lost. Bodily repair also normally occurs at this time. Most adults need about 7-8 hours of this each day or night.

The body's rest cycle. See the entire definition of Sleep

A natural periodic state of rest for the mind and body, in which the eyes usually close and consciousness is completely or partially lost, so that there is a decrease in bodily movement and responsiveness to external stimuli. During sleep the brain in humans and other mammals undergoes a characteristic cycle of brain-wave activity that includes intervals of dreaming.

The state in which an individual rests quietly in a recumbent position, disengages from the environment, and becomes unresponsive to stimuli.

Overall state in which an individual rests quiescently in a recumbent position, disengages from the environment, and become unresponsive to stimuli.

Sleep is the state of natural rest observed in most mammals, birds, fish, as well as invertebrates such as the fruitfly Drosophila. It is characterized by a reduction in voluntary body movement, decreased reaction to external stimuli, an increased rate of anabolism (the synthesis of cell structures), and a decreased rate of catabolism (the breakdown of cell structures). In humans, mammals and many other animals which have been studied, such as fish, birds, mice and fruitflies, regular sleep is necessary for survival.

the natural periodic suspension of consciousness during which the powers of the body are restored, characterized by lessened consciousness and slowed-down metabolism

Sleeping is similar to blocking in that the thread involved is suspended for a period of time. The difference is that blocking typically involves waiting on system resources, while sleeping generally involves waiting on an event.

be asleep

The state in which a thread completely suspends execution until another thread signals it that there is work to do.

A thread is asleep when it is blocked on a condition variable or a sleep queue via msleep or tsleep. See Also: block.

Wait for a given period, see the section called "Use that idle time!".

Wait for a given period, see Section 4.4.1.

Sleep is a common method within the Thread class. It causes a thread to "take a break" for some period of time and, more importantly, it releases the processor so that it can be used by other threads.

Suspend process execution pending occurrence of an event; the term "block" is also used.

Unix command line program that delays execution for a specified period of time.