Definition of sleep
What does the word sleep mean?
part of speech: verb intransitive
(slept). Be immersed in s., fall or be asleep, (let sleeping dogs lie, avoid stirring up trouble; s. on, upon, over, a question, leave it till tomorrow; s. the clock round); spend in or affect by sleeping (s. the hours away; slept off his vexation, headache, de-bauch); be inactive or dormant (sword sleeps in the scabbard; top sleeps, spins so steadily as to seem motionless; sleeping partner, not sharing management); lie in the grave; provide sleeping accommodation for (lodging-house sleeps 300 men); sleeping-bag, for sleeping out-of-doors in; sleeping-car (riage), railway wagon provided with beds; sleeping-draught, opiate; sleeping-sickness, W.-Afr. disease with headache, drownsiness& emaciation, usu. fatal; sleeping-suit, pyjamas. [old English]
part of speech: noun
Bodily condition, normally recurring every night& lasting several hours, in which nervous system is inactive, eyes are closed, muscles relaxed, & consciousness nearly suspended, prolonged similar condition of hibernating animals, (beauty s.; the s. of the just, sound; s. that knows not breaking, death; broken s., with disturbed intervals; go to s., fall asleep; fall on s. archaic, go to s., fig. dic); a period of or single indulgence in s. (shall try to get a s.); (fig.) rest, quiet, negligence, death, &c.; s.-walker, -walking, somnambulist, -ism. Hence sleepless a., sleeplessly adv., sleeplessness n. [old English]