The Collaborative International Dictionary of English v.0.48:

Bowel \Bow"el\, n. [OE. bouel, bouele, OF. boel, boele, F.
   boyau, fr. L. botellus a small sausage, in LL. also
   intestine, dim. of L. botulus sausage.]
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   1. One of the intestines of an animal; an entrail, especially
      of man; a gut; -- generally used in the plural.
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            He burst asunder in the midst, and all his bowels
            gushed out.                           --Acts i. 18.
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   2. pl. Hence, figuratively: The interior part of anything;
      as, the bowels of the earth.
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            His soldiers . . . cried out amain,
            And rushed into the bowels of the battle. --Shak.
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   3. pl. The seat of pity or kindness. Hence: Tenderness;
      compassion. "Thou thing of no bowels." --Shak.
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            Bloody Bonner, that corpulent tyrant, full (as one
            said) of guts, and empty of bowels.   --Fuller.
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   4. pl. Offspring. [Obs.] --Shak.
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The Collaborative International Dictionary of English v.0.48:

Bowel \Bow"el\, v. t. [imp. & p. p. Boweled or Bowelled; p.
   pr. & vb. n. Boweling or Bowelling.]
   To take out the bowels of; to eviscerate; to disembowel.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bowel
    n 1: the part of the alimentary canal between the stomach and
         the anus [syn: intestine, bowel, gut]