The Collaborative International Dictionary of English v.0.48:

Cog \Cog\ (k[o^]g), v. t. [imp. & p. p. Cogged (k[o^]gd); p.
   pr. & vb. n. Cogging.] [Cf. W. coegio to make void, to
   beceive, from coeg empty, vain, foolish. Cf. Coax, v. t.]
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   1. To seduce, or draw away, by adulation, artifice, or
      falsehood; to wheedle; to cozen; to cheat. [R.]
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            I'll . . . cog their hearts from them. --Shak.
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   2. To obtrude or thrust in, by falsehood or deception; as, to
      cog in a word; to palm off. [R.]
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            Fustian tragedies . . . have, by concerted
            applauses, been cogged upon the town for
            masterpieces.                         --J. Dennis
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            To cog a die, to load so as to direct its fall; to
            cheat in playing dice.                --Swift.
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