The Collaborative International Dictionary of English v.0.48:

Jig \Jig\, v. t. [imp. & p. p. Jigged; p. pr. & vb. n.
   Jigging.]
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   1. To sing to the tune of a jig.
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            Jig off a tune at the tongue's end.   --Shak.
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   2. To trick or cheat; to cajole; to delude. --Ford.
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   3. (Mining) To sort or separate, as ore in a jigger or sieve.
      See Jigging, n.
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   4. (Metal Working) To cut or form, as a piece of metal, in a
      jigging machine.
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