…a condition of body and mind which typically recurs for several hours every night, in which the nervous system is inactive, the eyes closed, the postural muscles relaxed, and consciousness practically suspended…
…a kind of sleep that occurs at intervals during the night and is characterized by rapid eye movements, more dreaming and bodily movement, and faster pulse and breathing…
…go to sleep without (or be untroubled by) worries…
…sleep in uncomfortable conditions, typically out of doors…
…a power-saving mode of operation in which devices or parts of devices are switched off until needed…
…sleep considered to be sufficient to keep one looking young and beautiful…
…habits and practices that are conducive to sleeping well on a regular basis…
…one could do something with no effort or conscious thought…
…dispel the effects of or recover from something by going to sleep…
…learning by hearing while asleep, typically by playing a tape recording of what is to be learned…
…a state of partial narcosis or stupor without total loss of consciousness, in particular a state induced by an injection of morphine and scopolamine, formerly popular for use during childbirth…
…cause someone to fall asleep by singing gently to them…
…make someone unconscious by using drugs, alcohol, or an anaesthetic…
…kill an animal, especially an old or badly injured one, painlessly (used euphemistically)…
…not sleep at all…
…sleep very lightly, aware of what is happening around one…
