Source : Webster's Revised Unabridged Dictionary (1913)

Gig \Gig\ (j[i^]g or g[i^]g), n. [Cf. OF. gigue. See {Jig}, n.]
   A fiddle. [Obs.]

Gig \Gig\ (g[i^]g), v. t. [Prob. fr. L. gignere to beget.]
   To engender. [Obs.] --Dryden.

Gig \Gig\, n.
   A kind of spear or harpoon. See {Fishgig}.

Gig \Gig\, v. t.
   To fish with a gig.

Gig \Gig\, n. [OE. gigge. Cf. {Giglot}.]
   A playful or wanton girl; a giglot.

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.

            Thou disputest like an infant; go, whip thy gig.
                                                  --Shak.

   2. A light carriage, with one pair of wheels, drawn by one
      horse; a kind of chaise.

   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.

   4. (Mach.) A rotatory cylinder, covered with wire teeth or
      teasels, for teaseling woolen cloth.

   {Gig machine}, {Gigging machine}, {Gig mill}, or {Napping
   machine}. See {Gig}, 4.

   {Gig saw}. See {Jig saw}.

Source : WordNet®

gig
     n 1: long and light rowing boat; especially for racing
     2: an implement with a shaft and barbed point used for catching
        fish [syn: {spear}, {fizgig}, {fishgig}, {lance}]
     3: a cluster of hooks (without barbs) that is drawn through a
        school of fish to hook their bodies; used when fish are
        not biting
     4: tender that is a light ship's boat; often for personal use
        of captain
     5: small two-wheeled horse-drawn carriage; with two seats and
        no hood
     6: a booking for musicians; "they played a gig in New Jersey"
     [also: {gigging}, {gigged}]

Source : Free On-Line Dictionary of Computing

gig
     
        {gigabyte}