Source : Webster's Revised Unabridged Dictionary (1913)

Stomach \Stom"ach\, n. [OE. stomak, F. estomac, L. stomachus,
   fr. Gr. sto`machos stomach, throat, gullet, fr. sto`ma a
   mouth, any outlet or entrance.]
   1. (Anat.) An enlargement, or series of enlargements, in the
      anterior part of the alimentary canal, in which food is
      digested; any cavity in which digestion takes place in an
      animal; a digestive cavity. See {Digestion}, and {Gastric
      juice}, under {Gastric}.

   2. The desire for food caused by hunger; appetite; as, a good
      stomach for roast beef. --Shak.

   3. Hence appetite in general; inclination; desire.

            He which hath no stomach to this fight, Let him
            depart.                               --Shak.

   4. Violence of temper; anger; sullenness; resentment; willful
      obstinacy; stubbornness. [Obs.]

            Stern was his look, and full of stomach vain.
                                                  --Spenser.

            This sort of crying proceeding from pride,
            obstinacy, and stomach, the will, where the fault
            lies, must be bent.                   --Locke.

   5. Pride; haughtiness; arrogance. [Obs.]

            He was a man Of an unbounded stomach. --Shak.

   {Stomach pump} (Med.), a small pump or syringe with a
      flexible tube, for drawing liquids from the stomach, or
      for injecting them into it.

   {Stomach tube} (Med.), a long flexible tube for introduction
      into the stomach.

   {Stomach worm} (Zo["o]l.), the common roundworm ({Ascaris
      lumbricoides}) found in the human intestine, and rarely in
      the stomach.

Stomach \Stom"ach\, v. t. [imp. & p. p. {Stomached}; p. pr. &
   vb. n. {Stomaching}.] [Cf. L. stomachari, v.t. & i., to be
   angry or vexed at a thing.]
   1. To resent; to remember with anger; to dislike. --Shak.

            The lion began to show his teeth, and to stomach the
            affront.                              --L'Estrange.

            The Parliament sit in that body . . . to be his
            counselors and dictators, though he stomach it.
                                                  --Milton.

   2. To bear without repugnance; to brook. [Colloq.]

Stomach \Stom"ach\, v. i.
   To be angry. [Obs.] --Hooker.

Source : WordNet®

stomach
     v 1: bear to eat; "He cannot stomach raw fish"
     2: put up with something or somebody unpleasant; "I cannot bear
        his constant criticism"; "The new secretary had to endure
        a lot of unprofessional remarks"; "he learned to tolerate
        the heat"; "She stuck out two years in a miserable
        marriage" [syn: {digest}, {endure}, {stick out}, {bear}, {stand},
         {tolerate}, {support}, {brook}, {abide}, {suffer}, {put
        up}]

stomach
     n 1: an enlarged and muscular saclike organ of the alimentary
          canal; the principal organ of digestion [syn: {tummy}, {tum},
           {breadbasket}]
     2: the region of the body of a vertebrate between the thorax
        and the pelvis [syn: {abdomen}, {venter}, {belly}]
     3: an inclination or liking for things involving conflict or
        difficulty or unpleasantness; "he had no stomach for a
        fight"
     4: an appetite for food; "exercise gave him a good stomach for
        dinner"