The stage of sleep during which most brain activity and dreams occur, characterised by rapid eye movement (REM).

A pattern of sleeping and waking; especially a regular pattern of sleeping and waking designed to promote health

(idiomatic, euphemistic, almost always preceded by the) Death.

(informal, euphemistic) Synonym of fuck around: to sleep with numerous partners.

The condition of being kept awake and not getting enough sleep (perhaps forcibly by someone else, or by a sleep disorder), to the point of noticeably lower alertness.

(pathology) Brief interruptions of breathing during sleep.

(transitive) To cause (someone) to sleep. / (transitive) To help (someone) to bed; put to bed. / (transitive, figuratively) To render dormant.

The normal paralysis of the body that occurs during REM sleep.

(idiomatic, reciprocal, euphemistic) To have sex with each other. / (idiomatic, reciprocal, euphemistic) To be intimate with each other in the same bed.

(computing) the state of a computer system in which the drives and interfaces are switched off, and the only task running is monitoring external activity, particularly a key press which restores the system to its active state from the random access memory.