rukh
Webster's Dictionary (GCIDE)
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. [1913 Webster]
Rukh \Rukh\, n. [Srr Roc.]
1.The roc. [1913 Webster]
2.(Zool.) A large bird, supposed by some to be the same as the extinct Epiornis of Madagascar. [Obs.] [1913 Webster]