Webster's English Dictionary

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rook

Cross references:
  1. castle                
 
1. rook \'ru.k\ n [ME, fr. OE hro-c; akin to OE hrfn raven - more at 
   MRAVEN : a common Old World gregarious bird (Corvus frugilegus) about the s 
   ize and color of the related American crow
2. rook vt : to defraud by cheating or swindling 
3. rook n [ME rok, fr. MF roc, fr. Ar rukh, fr. Per] : a chess piece that 
   moves parallel to the sides of the board across any n umber of unoccupied 
   squares