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sleeping

[slee-ping] /ˈsli pɪŋ/
noun
1.
the condition of being asleep.
adjective
2.
3.
of, pertaining to, or having accommodations for sleeping:
a sleeping compartment.
4.
used to sleep in or on:
a sleeping jacket.
5.
used to induce or aid sleep or while asleep:
sleeping mask.
Origin
1250-1300
1250-1300; Middle English; see sleep, -ing1, -ing2
Related forms
unsleeping, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for un-sleeping

sleeping

adj.

c.1300, past participle adjective from sleep (v.). Sleeping-pill is from 1660s; sleeping-bag is from 1850; sleeping sickness as a specific African tropical disease is first recorded 1875; sleeping has been used since late 14c. for diseases marked by morbid conditions. Sleeping Beauty (1729) is Perrault's La belle au bois dormant.

Online Etymology Dictionary, © 2010 Douglas Harper
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