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

spook \spook\ sp=ook, n. d. spook; akin to g. spuk, sw.
   sp"oke, dan. sp"ogelse a specter, sp"oge to play,
   sport, joke, sp"og a play, joke.
   1. a spirit; a ghost; an apparition; a hobgoblin. written
      also spuke. --ld. lytton.
      1913 webster

   2. zool. the chimaera.
      1913 webster
see also:
spuke 

[2] : WordNet (r) 2.0

spook
     n 1: someone unpleasantly strange or eccentric syn: creep, weirdo,
           weirdie, weirdy
     2: a mental representation of some haunting experience; "he
        looked like he had seen a ghost"; "it aroused specters
        from his past" syn: ghost, shade, wraith, specter,
         spectre
     v : frighten or scare, and often provoke into a violent action;
         "the noise spooked the horse"
see also:
creep weirdo weirdie weirdy ghost shade 
wraith specter spectre 

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

96 moby thesaurus words for "spook":
   masan, affright, agent, agitate, alarm, apparition, appearance,
   astral, astral spirit, awe, banshee, bogey, bug, case, character,
   control, convulse, curdle the blood, departed spirit, discompose,
   disembodied spirit, disquiet, distract, disturb, duck, duppy,
   dybbuk, eidolon, embroil, form, fright, frighten, funk, ghost,
   grateful dead, guide, hant, haunt, horripilate, idolum,
   immateriality, incorporeal, incorporeal being, incorporeity, larva,
   lemures, make one tremble, manes, materialization, obsess, oddball,
   oddity, oni, original, perturb, phantasm, phantasma, phantom,
   poltergeist, possess, presence, psych, quiz, raise apprehensions,
   revenant, scare, shade, shadow, shake, shape, shrouded spirit,
   specter, spectral ghost, spirit, sprite, spy, stagger, startle,
   terrify, terrorize, theophany, throw, throw into confusion,
   trouble, undercover man, unman, unnerve, unsettle, unstring,
   unsubstantiality, upset, vision, walking dead man, wandering soul,
   wraith, zombie

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