The Collaborative International Dictionary of English v.0.48:

Spuke \Spuke\ (sp[=u]k), n.
   See Spook.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Spook \Spook\ (sp[=oo]k), n. [D. spook; akin to G. spuk, Sw.
   sp["o]ke, Dan. sp["o]gelse a specter, sp["o]ge to play,
   sport, joke, sp["o]g 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]