Source : Webster's Revised Unabridged Dictionary (1913)

Rig \Rig\, n. [See {Ridge}.]
   A ridge. [Prov. or Scott.]

Rig \Rig\, v. t. [imp. & p. p. {Rigged}; p. pr. & vb. n.
   {Rigging}.] [Norweg. rigga to bind, particularly, to wrap
   round, rig; cf. AS. wr[=i]han to cover.]
   1. To furnish with apparatus or gear; to fit with tackling.

   2. To dress; to equip; to clothe, especially in an odd or
      fanciful manner; -- commonly followed by out.

            Jack was rigged out in his gold and silver lace.
                                                  --L'Estrange.

   {To rig a purchase}, to adapt apparatus so as to get a
      purchase for moving a weight, as with a lever, tackle,
      capstan, etc.

   {To rig a ship} (Naut.), to fit the shrouds, stays, braces,
      etc., to their respective masts and yards.

Rig \Rig\, n.
   1. (Naut.) The peculiar fitting in shape, number, and
      arrangement of sails and masts, by which different types
      of vessels are distinguished; as, schooner rig, ship rig,
      etc. See Illustration in Appendix.

   2. Dress; esp., odd or fanciful clothing. [Colloq.]

Rig \Rig\, n. [Cf. {Wriggle}.]
   1. A romp; a wanton; one given to unbecoming conduct. [Obs.]
      --Fuller.

   2. A sportive or unbecoming trick; a frolic.

   3. A blast of wind. [Prov. Eng.] --Wright.

            That uncertain season before the rigs of Michaelmas
            were yet well composed.               --Burke.

   {To run a rig}, to play a trick; to engage in a frolic; to do
      something strange and unbecoming.

            He little dreamt when he set out Of running such a
            rig.                                  --Cowper.

Rig \Rig\, v. i.
   To play the wanton; to act in an unbecoming manner; to play
   tricks. ``Rigging and rifling all ways.'' --Chapman.

Rig \Rig\, v. t.
   To make free with; hence, to steal; to pilfer. [Obs. or
   Prov.] --Tusser.

   {To rig the market} (Stock Exchange), to raise or lower
      market prices, as by some fraud or trick. [Cant]

Source : WordNet®

rig
     n 1: gear (including necessary machinery) for a particular
          enterprise
     2: a truck consisting of a tractor and trailer together [syn: {trailer
        truck}, {tractor trailer}, {trucking rig}, {articulated
        lorry}, {semi}]
     3: formation of masts, spars, sails, etc., on a vessel [syn: {rigging}]
     4: a set of clothing (with accessories); "his getup was
        exceedingly elegant" [syn: {outfit}, {getup}, {turnout}]
     5: gear used in fishing [syn: {fishing gear}, {tackle}, {fishing
        tackle}, {fishing rig}]
     6: a vehicle with four wheels drawn by two or more horses [syn:
         {carriage}, {equipage}]
     7: the act of swindling by some fraudulent scheme; "that book
        is a fraud" [syn: {swindle}, {cheat}]
     [also: {rigging}, {rigged}]

rig
     v 1: arrange the outcome of by means of deceit; "rig an election"
          [syn: {set up}]
     2: manipulate in a fraudulent manner; "rig prices" [syn: {manipulate}]
     3: connect or secure to; "They rigged the bomb to the ignition"
     4: equip with sails, masts, etc.; "rig a ship" [syn: {set}, {set
        up}]
     [also: {rigging}, {rigged}]