The Collaborative International Dictionary of English v.0.48:

Gig \Gig\, n. [Cf. Icel. g[imac]gja fiddle, MHG. g[imac]ge, G.
   geige, Icel. geiga to take a wrong direction, rove at random,
   and E. jig.]
   1. A top or whirligig; any little thing that is whirled round
      in play.
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            Thou disputest like an infant; go, whip thy gig.
                                                  --Shak.
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   2. A light carriage, with one pair of wheels, drawn by one
      horse; a kind of chaise.
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   3. (Naut.) A long, light rowboat, generally clinkerbuilt, and
      designed to be fast; a boat appropriated to the use of the
      commanding officer; as, the captain's gig.
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   4. (Mach.) A rotatory cylinder, covered with wire teeth or
      teasels, for teaseling woolen cloth.
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   Gig machine, Gigging machine, Gig mill, or Napping
   machine. See Gig, 4.

   Gig saw. See Jig saw.
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