| rook | (noun) common gregarious Old World bird about the size and color of the American crow | Synonyms: Corvus frugilegus |
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| (noun) (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard | Synonyms: castle |
| (verb) deprive of by deceit | Synonyms: bunco, con, defraud, diddle, goldbrick, hornswoggle, mulct, nobble, scam, short-change, swindle, victimize |
| rookery | (noun) a breeding ground for gregarious birds (such as rooks) | - |
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| rookie | (noun) an awkward and inexperienced youth | Synonyms: cub, greenhorn |
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