Roc \Roc\, n. [Ar. & Per. rokh or rukh. Cf. Rook a castle.]
   A monstrous bird of Arabian mythology. [Written also rock,
   and rukh.] --Brande & C.
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	Rukh \Rukh\, n. [Srr Roc.]
   1. The roc.
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   2. (Zool.) A large bird, supposed by some to be the same as
      the extinct Epiornis of Madagascar. [Obs.]
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