Source : Webster's Revised Unabridged Dictionary (1913)

Rifle \Ri"fle\, v. t.
   1. To grove; to channel; especially, to groove internally
      with spiral channels; as, to rifle a gun barrel or a
      cannon.

   2. To whet with a rifle. See {Rifle}, n., 3.

Rifle \Ri"fle\, v. t. [imp. & p. p. {Rifled}; p. pr. & vb. n.
   {Rifling}.] [F. rifler to rifle, sweep away; of uncertain
   origin. CF. {Raff}.]
   1. To seize and bear away by force; to snatch away; to carry
      off.

            Till time shall rifle every youthful grace. --Pope.

   2. To strip; to rob; to pillage. --Piers Plowman.

            Stand, sir, and throw us that you have about ye: If
            not, we'll make you sit and rifle you. --Shak.

   3. To raffle. [Obs.] --J. Webster.

Rifle \Ri"fle\, v. i.
   1. To raffle. [Obs.] --Chapman.

   2. To commit robbery. [R.] --Bp. Hall.

Rifle \Ri"fle\, n. [Akin to Dan. rifle, or riffel, the rifle of
   a gun, a chamfer (cf. riffel, riffelb["o]sse, a rifle gun,
   rifle to rifle a gun, G. riefeln, riefen, to chamfer,
   groove), and E. rive. See {Rive}, and cf. {Riffle}, {Rivel}.]
   1. A gun, the inside of whose barrel is grooved with spiral
      channels, thus giving the ball a rotary motion and
      insuring greater accuracy of fire. As a military firearm
      it has superseded the musket.

   2. pl. (Mil.) A body of soldiers armed with rifles.

   3. A strip of wood covered with emery or a similar material,
      used for sharpening scythes.

   {Rifle pit} (Mil.), a trench for sheltering sharpshooters.

Source : WordNet®

rifle
     v 1: steal goods; take as spoils; "During the earthquake people
          looted the stores that were deserted by their owners"
          [syn: {plunder}, {despoil}, {loot}, {reave}, {strip}, {ransack},
           {pillage}, {foray}]
     2: go through in search of something; search through someone's
        belongings in an unauthorized way; "Who rifled through my
        desk drawers?" [syn: {go}]

rifle
     n : a shoulder firearm with a long barrel and a rifled bore; "he
         lifted the rifle to his shoulder and fired"