Source : Webster's Revised Unabridged Dictionary (1913)

Flatulent \Flat"u*lent\, a. [L. flatus a blowing, flatus ventris
   windiness, flatulence, fr. flare to blow: cf. F. flatulent.
   See {Blow}.]
   1. Affected with flatus or gases generated in the alimentary
      canal; windy.

   2. Generating, or tending to generate, wind in the stomach.

            Vegetables abound more with a["e]rial particles than
            animal substances, and therefore are more flatulent.
                                                  --Arbuthnot.

   3. Turgid with flatus; as, a flatulent tumor. --Quincy.

   4. Pretentious without substance or reality; puffy; empty;
      vain; as, a flatulent vanity.

            He is too flatulent sometimes, and sometimes too
            dry.                                  --Dryden.

Source : WordNet®

flatulent
     adj 1: generating excessive gas in the alimentary canal
     2: suffering from excessive gas in the alimentary canal [syn: {colicky},
         {gassy}]