The Collaborative International Dictionary of English v.0.48:

Weird \Weird\, a.
   [1913 Webster]
   1. Of or pertaining to fate; concerned with destiny.
      [1913 Webster]

   2. Of or pertaining to witchcraft; caused by, or suggesting,
      magical influence; supernatural; unearthly; wild; as, a
      weird appearance, look, sound, etc.
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            Myself too had weird seizures.        --Tennyson.
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            Those sweet, low tones, that seemed like a weird
            incantation.                          --Longfellow.
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   Weird sisters, the Fates. [Scot.] --G. Douglas.
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   Note: Shakespeare uses the term for the three witches in
         Macbeth.
         [1913 Webster]

               The weird sisters, hand in hand,
               Posters of the sea and land.       --Shak.
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Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "Weird Sisters":
   Atropos, Clotho, Dame Fortune, Decuma, Fata, Fates, Fortuna,
   Heaven, Lachesis, Moirai, Morta, Nona, Norns, Parcae, Providence,
   Skuld, Tyche, Urdur, Verthandi, Weirds, coven, hag, hex, lamia,
   shamaness, sorceress, witch, witchwife, witchwoman