roc

from WordNet (r) 3.0 (2006)

roc
    n 1: mythical bird of prey having enormous size and strength

from The Collaborative International Dictionary of English v.0.48

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]

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

ROC
       RAID On a Chip (RAID)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

ROC
       Reconstruction Of Color (ICE, Scanner)