sleep

v. be in a state of sleep, fall asleep, slumber; enter into or be in a state that resembles sleep; be inattentive, be inactive; accommodate, provide with a place to sleep; be in the repose of death

n. unconscious state entered into by the body for the purpose of rest and rejuvenation (in humans and animals); period of rest; inactive state; repose of death; closing of leaves and petals at night

Sleep is the state of natural rest observed throughout the animal kingdom, in all mammals and birds, and in many reptiles, amphibians, and fish.In humans, other mammals, and many other animals that have been studied — such as fish, birds, ants, and fruit-flies — regular sleep is necessary for survival. The capability for arousal from sleep is a protective mechanism and also necessary for health and survival.
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Sleep a period of rest for the body and mind, during which volition and consciousness are in abeyance and bodily functions are partially suspended; [more]Sleep - Community and Resources

Noun
1. a natural and periodic state of rest during which consciousness of the world is suspended; "he didn't get enough sleep last night"; "calm as a child in dreamless slumber"
(synonym) slumber
(hypernym) physiological state, physiological condition
(hyponym) sleeping
(derivation) kip, slumber, log Z's, catch some Z's
2. a torpid state resembling sleep
(hypernym) physiological state, physiological condition
3. a period of time spent sleeping; "he felt better after a little sleep"; "there wasn't time for a nap"
(synonym) nap
(hypernym) time period, period of time, period
(hyponym) beauty sleep
4. euphemisms for death (based on an analogy between lying in a bed and in a tomb); "she was laid to rest beside her husband"; "they had to put their family pet to sleep"
(synonym) rest, eternal rest, eternal sleep, quietus
(hypernym) death
Verb
1. be asleep
(synonym) kip, slumber, log Z's, catch some Z's
(antonym) wake
(hypernym) rest
(hyponym) bundle, practice bundling
(see-also) sleep late, sleep in
(derivation) nap
2. be able to accommodate for sleeping; "This tent sleeps six people"
(hypernym) accommodate, hold, admit
(derivation) nap

n. train

v. drag, draw, lug, tug, haul, tow, trail, track, daggle

v. grind, sharpen, polish, edge, swim across