The Collaborative International Dictionary of English v.0.48:

Slept \Slept\,
   imp. & p. p. of Sleep.
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The Collaborative International Dictionary of English v.0.48:

Sleep \Sleep\, v. i. [imp. & p. p. Slept; p. pr. & vb. n.
   Sleeping.] [OE. slepen, AS. sl?pan; akin to OFries. sl?pa,
   OS. sl[=a]pan, D. slapen, OHG. sl[=a]fan, G. schlafen, Goth.
   sl?pan, and G. schlaff slack, loose, and L. labi to glide,
   slide, labare to totter. Cf. Lapse.]
   1. To take rest by a suspension of the voluntary exercise of
      the powers of the body and mind, and an apathy of the
      organs of sense; to slumber. --Chaucer.
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            Watching at the head of these that sleep. --Milton.
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   2. Figuratively:
      (a) To be careless, inattentive, or uncouncerned; not to
          be vigilant; to live thoughtlessly.
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                We sleep over our happiness.      --Atterbury.
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      (b) To be dead; to lie in the grave.
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                Them also which sleep in Jesus will God bring
                with him.                         --1 Thess. iv.
                                                  14.
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      (c) To be, or appear to be, in repose; to be quiet; to be
          unemployed, unused, or unagitated; to rest; to lie
          dormant; as, a question sleeps for the present; the
          law sleeps.
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                How sweet the moonlight sleep upon this bank!
                                                  --Shak.
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