[syn: ghost, shade, spook, wraith, specter, spectre]
The Collaborative International Dictionary of English v.0.48:
Spectre \Spec"tre\, n.
   See Specter.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Specter \Spec"ter\, Spectre \Spec"tre\, n. [F. spectre, fr. L.
   spectrum an appearance, image, specter, fr. specere to look.
   See Spy, and cf. Spectrum.]
   1. Something preternaturally visible; an apparition; a ghost;
      a phantom.
      [1913 Webster]
            The ghosts of traitors from the bridge descend,
            With bold fanatic specters to rejoice. --Dryden.
      [1913 Webster]
   2. (Zool.)
      (a) The tarsius.
      (b) A stick insect.
          [1913 Webster]
   Specter bat (Zool.), any phyllostome bat.
   Specter candle (Zool.), a belemnite.
   Specter shrimp (Zool.), a skeleton shrimp. See under
      Skeleton.
      [1913 Webster]
WordNet (r) 3.0 (2006):
spectre
    n 1: a ghostly appearing figure; "we were unprepared for the
         apparition that confronted us" [syn: apparition,
         phantom, phantasm, phantasma, fantasm, specter,
         spectre]
    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, spook, wraith,
       specter, spectre]