- sleep [slēp]n.[ME slep < OE slæp, akin to Ger schlaf, sleep, schlaff, loose, lax < IE * slab < base * (s)leb-, * (s)lab-, loose, slack > LIP, LIMP1, L labor, to slip, sink]1.a) a natural, regularly recurring condition of rest for the body and mind, during which the eyes are usually closed and there is little or no conscious thought or voluntary movement, but there is intermittent dreamingb) a spell of sleeping2. any state of inactivity thought of as like sleep, as death, unconsciousness, hibernation, etc.3. Bot. NYCTITROPISMvi.slept, sleeping1. to be in the state of sleep; slumber2. to be in a state of inactivity like sleep, as that of death, quiescence, hibernation, inattention, etc.3. Informal to have sexual intercourse ( with)4. Informal to postpone a decision ( on) to allow time for deliberation [let me sleep on it]5. Bot. to assume a nyctitropic position at night, as petals or leavesvt.1. to slumber in (a specified kind of sleep) [to sleep the sleep of the just]2. to provide sleeping accommodations for [a boat that sleeps four]——————last sleepdeath——————sleep aroundInformal to have promiscuous sexual relations——————sleep away1. to spend in sleeping; sleep during2. to get rid of by sleeping——————sleep in1. to sleep at the place where one is employed as a household servant2. to sleep later in the morning than one usually does——————sleep it offto rid oneself of the effects of some excess, overindulgence, etc., specif. of the aftereffects of drinking much alcoholic liquor, by sleeping——————sleep offto rid oneself of by sleeping——————sleep out1. to spend in sleeping; sleep throughout2. to sleep outdoors——————sleep overInformal to spend the night at another's home
English World dictionary. V. Neufeldt. 2014.