The Collaborative International Dictionary of English v.0.48:

Rig \Rig\, n. [Cf. Wriggle.]
   1. A romp; a wanton; one given to unbecoming conduct. [Obs.]
      --Fuller.
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   2. A sportive or unbecoming trick; a frolic.
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   3. A blast of wind. [Prov. Eng.] --Wright.
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            That uncertain season before the rigs of Michaelmas
            were yet well composed.               --Burke.
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   To run a rig, to play a trick; to engage in a frolic; to do
      something strange and unbecoming.
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            He little dreamt when he set out
            Of running such a rig.                --Cowper.
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