Source : Webster's Revised Unabridged Dictionary (1913)

Rip \Rip\, v. t. [imp. & p. p. {Ripped}; p. pr. & vb. n.
   {Ripping}.] [Cf. AS. r[=y]pan, also Sw. repa to ripple flax,
   D. repelen, G. reffen, riffeln, and E. raff, raffle. Cf.
   {Raff}, {Ripple} of flax.]
   1. To divide or separate the parts of, by cutting or tearing;
      to tear or cut open or off; to tear off or out by
      violence; as, to rip a garment by cutting the stitches; to
      rip off the skin of a beast; to rip up a floor; --
      commonly used with up, open, off.

   2. To get by, or as by, cutting or tearing.

            He 'll rip the fatal secret from her heart.
                                                  --Granville.

   3. To tear up for search or disclosure, or for alteration; to
      search to the bottom; to discover; to disclose; -- usually
      with up.

            They ripped up all that had been done from the
            beginning of the rebellion.           --Clarendon.

            For brethern to debate and rip up their falling out
            in the ear of a common enemy . . . is neither wise
            nor comely.                           --Milton.

   4. To saw (wood) lengthwise of the grain or fiber.

   {Ripping chisel} (Carp.), a crooked chisel for cleaning out
      mortises. --Knight.

   {Ripping iron}. (Shipbuilding) Same as {Ravehook}.

   {Ripping saw}. (Carp.) See {Ripsaw}.

   {To rip out}, to rap out, to utter hastily and violently; as,
      to rip out an oath. [Colloq.] See {To rap out}, under
      {Rap}, v. t.

Source : WordNet®

ripping chisel
     n : a long chisel with a slightly bent cutting end; used for
         heavy prying or cleaning mortises