The Collaborative International Dictionary of English v.0.48:

Jig \Jig\, v. t. [imp. & p. p. Jigged; p. pr. & vb. n.
   Jigging.]
   [1913 Webster]
   1. To sing to the tune of a jig.
      [1913 Webster]

            Jig off a tune at the tongue's end.   --Shak.
      [1913 Webster]

   2. To trick or cheat; to cajole; to delude. --Ford.
      [1913 Webster]

   3. (Mining) To sort or separate, as ore in a jigger or sieve.
      See Jigging, n.
      [1913 Webster]

   4. (Metal Working) To cut or form, as a piece of metal, in a
      jigging machine.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jig \Jig\, v. i.
   1. To dance a jig; to skip about.
      [1913 Webster]

            You jig, you amble, and you lisp.     --Shak.
      [1913 Webster]

   2. To move with a skip or rhythm; to move with vibrations or
      jerks.

            The fin would jig off slowly, as if it were looking
            for nothing at all.                   --Kipling.
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Jig \Jig\, n. [OF. gigue a stringed instrument, a kind of dance,
   F. gigue dance, tune, gig; of German origin; cf. MHG.
   g[imac]ge fiddle, G. geige. Cf. Gig a fiddle, Gig a
   whirligig.]
   [1913 Webster]
   1. (Mus.) A light, brisk musical movement.
      [1913 Webster]

            Hot and hasty, like a Scotch jig.     --Shak.
      [1913 Webster]

   3. A light, humorous piece of writing, esp. in rhyme; a farce
      in verse; a ballad. [Obs.]
      [1913 Webster]

            A jig shall be clapped at, and every rhyme
            Praised and applauded.                --Beau. & Fl.
      [1913 Webster]

   4. A piece of sport; a trick; a prank. [Obs.]
      [1913 Webster]

            Is't not a fine jig,
            A precious cunning, in the late Protector? --Beau. &
                                                  Fl.
      [1913 Webster]

   5. A trolling bait, consisting of a bright spoon and a hook
      attached.
      [1913 Webster]

   6. (Mach.)
      (a) A small machine or handy tool; esp.: (Metal Working) A
          contrivance fastened to or inclosing a piece of work,
          and having hard steel surfaces to guide a tool, as a
          drill, or to form a shield or template to work to, as
          in filing.
      (b) (Mining) An apparatus or a machine for jigging ore.
          [1913 Webster]

   Drill jig, a jig for guiding a drill. See Jig, 6
      (a) .

   Jig drilling, Jig filing (Metal Working), a process of
      drilling or filing in which the action of the tool is
      directed or limited by a jig.

   Jig saw, a sawing machine with a narrow, vertically
      reciprocating saw, used to cut curved and irregular lines,
      or ornamental patterns in openwork, a scroll saw; --
      called also gig saw.
      [1913 Webster]

WordNet (r) 3.0 (2006):

jig
    n 1: music in three-four time for dancing a jig [syn: jig,
         gigue]
    2: a fisherman's lure with one or more hooks that is jerked up
       and down in the water
    3: a device that holds a piece of machine work and guides the
       tools operating on it
    4: any of various old rustic dances involving kicking and
       leaping
    v 1: dance a quick dance with leaping and kicking motions

Moby Thesaurus II by Grady Ward, 1.0:

229 Moby Thesaurus words for "jig":
   Charleston, Highland fling, Lambeth Walk, Mexican hat dance,
   Portland fancy, Virginia reel, Watusi, allemande, and jump, angle,
   bait, bait the hook, barn dance, belly dance, birdlime, bob,
   bobble, bola, bolero, boogaloo, bounce, bound, bourree, boutade,
   branle, breakdown, broad jump, buck, buckjump, bump, bunny hop,
   cakewalk, can-can, capriole, cha-cha, chonchina, clam, clog,
   cobweb, conga, cotillion, country dance, courante, curvet, dap,
   demivolt, device, dib, dibble, didder, dither, dragnet, drive,
   falter, fan dance, fandango, feint, fidget, fish, fishhook,
   flamenco, flick, fling, flip, flirt, flounce, fly, fly-fish,
   flying jump, folk dance, fox trot, galliard, gambit, gavotte,
   gelandesprung, german, gig, gill net, gimmick, go fishing,
   grand jete, grig, grimace, ground bait, guddle, handspring,
   have the fidgets, high jump, hippety-hop, hitch, hokey-pokey, hook,
   hootchy-kootchy, hop, hopak, hornpipe, hula, hula-hula, hurdle,
   hustle, interpretative dance, itch, jack, jacklight, jar, jerk,
   jete, jigger, jigget, jiggle, jog, joggle, jolt, jostle, jump,
   jump shot, jump turn, jump-hop, jump-off, kola, lancers, lariat,
   lasso, lavolta, leap, leapfrog, limbo, lime, lindy, long jump,
   lure, mambo, mazurka, meshes, minuet, monkey, morris, net, noose,
   ox dance, pachanga, pas de deux, pas seul, paso doble, passamezzo,
   peabody, play, ploy, pluck, plug, pole vault, polka, polonaise,
   pounce, pound net, purse seine, quadrille, quake, quaver, quiver,
   rain dance, reel, rictus, rigadoon, rumba, running broad jump,
   running high jump, ruse, samba, saut de basque, seine, shake,
   shimmy, shiver, shock, shrimp, shudder, ski jump, skip, snake,
   snake dance, snare, snatch, sniggle, spin, spinner, spring,
   springe, square dance, squid, start, steeplechase, still-fish,
   strathspey, sudden pull, swim, sword dance, tango, tap dance,
   tarantella, tic, toils, torch, tour jete, trawl, tremble, tremor,
   trepak, troll, turkey trot, tweak, twist, twitch, twitter, upleap,
   upspring, valse, vault, vellicate, waltz, war dance, whale,
   whizzer, wile, wobble, wobbler, wrench, yank, yerk



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

JIG
       Jabber Interest Group (Jabber)