Usually means: Restorative, unconscious state of rest.
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We found 50 dictionaries that define the word sleep:

General (28 matching dictionaries)
  1. sleep: Longman Dictionary of Contemporary English
  2. sleep: Merriam-Webster
  3. sleep: Oxford Learner's Dictionaries
  4. sleep: American Heritage Dictionary of the English Language
  5. sleep: Collins English Dictionary
  6. sleep: Vocabulary.com
  7. Sleep, sleep: Wordnik
  8. sleep: Cambridge Advanced Learner's Dictionary
  9. sleep: Wiktionary
  10. sleep: Webster's New World College Dictionary, 4th Ed.
  11. sleep: The Wordsmyth English Dictionary-Thesaurus
  12. sleep: Infoplease Dictionary
  13. sleep: Dictionary.com
  14. sleep (n.), sleep (v.): Online Etymology Dictionary
  15. sleep: Cambridge Essential American English Dictionary
  16. Sleep (Eric Whitacre song), Sleep (Marion song), Sleep (Max Richter album), Sleep (OS X), Sleep (Texas song), Sleep (Unix), Sleep (album), Sleep (band), Sleep (choral song), Sleep (command), Sleep (disambiguation), Sleep (film), Sleep (journal), Sleep (non-human), Sleep (operating system), Sleep (rapper), Sleep (system call), Sleep: Wikipedia, the Free Encyclopedia
  17. Sleep: Online Plain Text English Dictionary
  18. sleep: Webster's Revised Unabridged, 1913 Edition
  19. sleep: Rhymezone
  20. sleep, sleep (de): AllWords.com Multi-Lingual Dictionary
  21. sleep: Webster's 1828 Dictionary
  22. Sleep: Dictionary of Phrase and Fable (1898)
  23. sleep: FreeDictionary.org
  24. sleep: Mnemonic Dictionary
  25. sleep: TheFreeDictionary.com
  26. sleep: Wikimedia Commons US English Pronunciations

Art (1 matching dictionary)
  1. The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) (No longer online)

Business (1 matching dictionary)
  1. sleep: Legal dictionary

Computing (2 matching dictionaries)
  1. sleep: Free On-line Dictionary of Computing
  2. sleep: Encyclopedia

Medicine (11 matching dictionaries)
  1. sleep: Merriam-Webster Medical Dictionary
  2. Dorland's Illustrated Medical Dictionary (No longer online)
  3. Sleep: MedTerms.com Medical Dictionary
  4. Medical Dictionary (No longer online)
  5. sleep: Natural Health glossary
  6. Sleep: Merck Manuals
  7. online medical dictionary (No longer online)
  8. Sleep Terms (No longer online)
  9. sleep: Medical dictionary
  10. Sleep: Drug Medical Dictionary
  11. Sleep Terms (No longer online)

Miscellaneous (3 matching dictionaries)
  1. SLEEP: Acronym Finder
  2. AbbreviationZ (No longer online)
  3. sleep: Idioms

Slang (3 matching dictionaries)
  1. sleep, sleep, sleep: Green’s Dictionary of Slang
  2. Sleep: Street Terms: Drugs and the Drug Trade
  3. sleep: Urban Dictionary

Tech (1 matching dictionary)
  1. Sweetwater Music (No longer online)

(Note: See sleeping as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
verb:  (intransitive) To rest in a state of reduced consciousness.
verb:  (idiomatic, euphemistic) To have sexual intercourse (see sleep with).
verb:  (transitive) To accommodate in beds.
verb:  (intransitive, idiomatic) To be careless, inattentive, or unconcerned; not to be vigilant; to live thoughtlessly.
verb:  (intransitive, euphemistic, idiomatic) To be dead.
verb:  (intransitive) To be, or appear to be, in repose; to be quiet; to be unemployed, unused, or unagitated; to rest; to lie dormant.
verb:  (computing, intransitive) To wait for a period of time without performing any action.
verb:  (computing, transitive) To place into a state of hibernation.
verb:  (intransitive, mechanics, dynamics) To spin on its axis with no other perceptible motion.
verb:  (transitive, mechanics, dynamics) To cause (a spinning top or yo-yo) to spin on its axis with no other perceptible motion.
noun:  (uncountable) The state of reduced consciousness during which a human or animal rests in a daily rhythm.
noun:  (countable, informal) An act or instance of sleeping.
noun:  (informal, metonymically) A night.
noun:  (uncountable) Rheum, crusty or gummy discharge found in the corner of the eyes after waking, whether real or a figurative objectification of sleep (in the sense of reduced consciousness).
noun:  A state of plants, usually at night, when their leaflets approach each other and the flowers close and droop, or are covered by the folded leaves.
noun:  The hibernation of animals.
noun:  A surname from English.

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Colors:
    midnight blue,     lavender,     pastel pink,     baby blue,     ivory, more...



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