<p><strong>Verb (used without object)</strong></p><ul><li>to take the rest afforded by a suspension of voluntary bodily functions and the natural suspension, complete or partial, of consciousness; cease being awake</li><li>to assume, especially at night, a state similar to the sleep of animals, marked by closing of petals, leaves, etc.</li><li>to be dormant, quiescent, or inactive, as faculties</li><li>to be careless or unalert; allow one's alertness, vigilance, or attentiveness to lie dormant</li><li>to lie in death</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to take rest in (a specified kind of sleep)</li><li>to accommodate for sleeping; have sleeping accommodations for</li><li>to spend or pass in sleep (usually followed by away or out)</li><li>to recover from the effects of (a headache, hangover, etc.) by sleeping (usually followed by off or away)</li></ul><p><strong>Noun</strong></p><ul><li>the state of a person, animal, or plant that sleeps</li><li>a period of sleeping: a brief sleep</li><li>dormancy or inactivity</li><li>the repose of death</li><li>sleeper</li></ul><p><strong>Verb Phrase</strong></p><ul><li>to be sexual partners; have a sexual relationship</li><li>to have sexual relations with many partners, especially in a casual way; be sexually promiscuous</li><li>to spend one or more nights in a place other than one's own home</li><li>to sleep away from one's place of employment</li><li>to sleep outdoors</li><li>to postpone making a decision about for at least a day</li></ul>