[1] : The Collaborative International Dictionary of English v.0.48

slumber \slum"ber\, v. i. imp.  p. p. slumbered; p. pr. 
   vb. n. slumbering. oe. slombren, slumberen, slumeren, as.
   slumerian, fr. sluma slumber; akin to d. sluimeren to
   slumber, mhg. slummern, slumen, g. schlummern, dan. slumre,
   sw. slumra, goth. slawan to be silent.
   1. to sleep; especially, to sleep lightly; to doze. --piers
      plowman.
      1913 webster

            he that keepeth israel shall neither slumber nor
            sleep.                                --ps. cxxi. 4.
      1913 webster

   2. to be in a state of negligence, sloth, supineness, or
      inactivity. "why slumbers pope?" --young.
      1913 webster
see also:
slumbered slumbering 

[2] : The Collaborative International Dictionary of English v.0.48

slumber \slum"ber\, v. t.
   1. to lay to sleep. r. --wotton.
      1913 webster

   2. to stun; to stupefy. obs. --spenser.
      1913 webster

[3] : The Collaborative International Dictionary of English v.0.48

slumber \slum"ber\, n.
   sleep; especially, light sleep; sleep that is not deep or
   sound; repose.
   1913 webster

         he at last fell into a slumber, and thence into a fast
         sleep, which detained him in that place until it was
         almost night.                            --bunyan.
   1913 webster

         fast asleep? it is no matter;
         enjoy the honey-heavy dew of slumber.    --shak.
   1913 webster

         rest to my soul, and slumber to my eyes. --dryden.
   1913 webster

[4] : WordNet (r) 2.0

slumber
     n 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" syn: sleep
     2: a dormant or quiescent state
     v : be asleep syn: sleep, kip, log z's, catch some z's
         ant: wake
see also:
sleep kip log z's catch some z's wake 

[5] : Moby Thesaurus II by Grady Ward, 1.0

75 moby thesaurus words for "slumber":
   ataraxia, ataraxy, beauty sleep, beddy-bye, bedtime, blanket drill,
   bye-bye, calmness, coma, composure, contemplation, dorm, doss,
   doze, dreamland, drowse, dullness, fitful sleep, fust, hang fire,
   hebetude, hibernation, idle, imperturbability, land of nod,
   languor, lassitude, light sleep, lucid stillness, marmoreal repose,
   nap, nirvana, oversleep, peace, peacefulness, placidity,
   placidness, quiescence, quiescency, quiet, quietism, quietness,
   quietude, repose, rest, restfulness, satori, saw logs, saw wood,
   serenity, shut-eye, silence, silken repose, sleep, sleep soundly,
   sleepland, sleepwalking, slumberland, smolder, snoozle, snore,
   somnambulism, somniloquy, somnus, stagnate, stillness, stupor,
   take a nap, torpidity, torpor, tranquillity, unconsciousness,
   vegetate, winter sleep, wise passiveness

Slumber >> S Words
Slumber, definition of term: Slumber
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