Source : Webster's Revised Unabridged Dictionary (1913)

Gut \Gut\, n. [OE. gut, got, AS. gut, prob. orig., a channel,
   and akin to ge['o]tan to pour. See {FOUND} to cast.]
   1. A narrow passage of water; as, the Gut of Canso.

   2. An intenstine; a bowel; the whole alimentary canal; the
      enteron; (pl.) bowels; entrails.

   3. One of the prepared entrails of an animal, esp. of a
      sheep, used for various purposes. See {Catgut}.

   4. The sac of silk taken from a silkworm (when ready to spin
      its cocoon), for the purpose of drawing it out into a
      thread. This, when dry, is exceedingly strong, and is used
      as the snood of a fish line.

   {Blind gut}. See {C[AE]cum}, n.
      (b) .

Gut \Gut\, v. t. [imp. & p. p. {Gutted}; p. pr. & vb. n.
   {Gutting}.]
   1. To take out the bowels from; to eviscerate.

   2. To plunder of contents; to destroy or remove the interior
      or contents of; as, a mob gutted the bouse.

            Tom Brown, of facetious memory, having gutted a
            proper name of its vowels, used it as freely as he
            pleased.                              --Addison.

Source : WordNet®

gut
     n 1: the part of the alimentary canal between the stomach and the
          anus [syn: {intestine}, {bowel}]
     2: a strong cord made from the intestines of sheep and used in
        surgery [syn: {catgut}]

gut
     v 1: empty completely; destroy the inside of; "Gut the building"
     2: remove the guts of; "gut the sheep"