The Collaborative International Dictionary of English v.0.48:

Roke \Roke\, n. [See Reek.]
   1. Mist; smoke; damp [Prov. Eng.] [Written also roak,
      rook, and rouk.]
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   2. A vein of ore. [Pov.Eng.] --Halliwell.
      [1913 Webster] Rokeage

The Collaborative International Dictionary of English v.0.48:

Rook \Rook\, n. [AS. hr[=o]c; akin to OHG. hruoh, ruoh, ruoho,
   Icel. hr[=o]kr, Sw. roka, Dan. raage; cf. Goth. hrukjan to
   crow.]
   1. (Zool.) A European bird (Corvus frugilegus) resembling
      the crow, but smaller. It is black, with purple and violet
      reflections. The base of the beak and the region around it
      are covered with a rough, scabrous skin, which in old
      birds is whitish. It is gregarious in its habits. The name
      is also applied to related Asiatic species.
      [1913 Webster]

            The rook . . . should be treated as the farmer's
            friend.                               --Pennant.
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   2. A trickish, rapacious fellow; a cheat; a sharper.
      --Wycherley.
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The Collaborative International Dictionary of English v.0.48:

Rook \Rook\, v. t. & i. [imp. & p. p. Rooked; p. pr. & vb. n.
   Rooking.]
   To cheat; to defraud by cheating. "A band of rooking
   officials." --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rook \Rook\ (r[oo^]k), n.
   Mist; fog. See Roke. [Obs.]
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The Collaborative International Dictionary of English v.0.48:

Rook \Rook\, v. i.
   To squat; to ruck. [Obs.] --Shak.
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The Collaborative International Dictionary of English v.0.48:

Rook \Rook\, n. [F. roc (cf. Sp. roque), fr. Per. & Ar. rokh, or
   rukh, the rook or castle at chess, also the bird roc (in this
   sense perhaps a different word); cf. Hind. rath a war
   chariot, the castle at chess, Skr. ratha a car, a war car.
   Cf. Roll.] (Chess)
   One of the four pieces placed on the corner squares of the
   board; a castle.
   [1913 Webster]

WordNet (r) 3.0 (2006):

rook
    n 1: (chess) the piece that can move any number of unoccupied
         squares in a direction parallel to the sides of the
         chessboard [syn: castle, rook]
    2: common gregarious Old World bird about the size and color of
       the American crow [syn: rook, Corvus frugilegus]
    v 1: deprive of by deceit; "He swindled me out of my
         inheritance"; "She defrauded the customers who trusted
         her"; "the cashier gypped me when he gave me too little
         change" [syn: victimize, swindle, rook, goldbrick,
         nobble, diddle, bunco, defraud, scam, mulct,
         gyp, gip, hornswoggle, short-change, con]