Source : Webster's Revised Unabridged Dictionary (1913)

Gabble \Gab"ble\, n.
   1. Loud or rapid talk without meaning.

            Forthwith a hideous gabble rises loud Among the
            builders.                             --Milton.

   2. Inarticulate sounds rapidly uttered; as of fowls.

Gabble \Gab"ble\, v. i. [imp. & p. p. {Gabbled}; p. pr. & vb. n.
   {Gabbling}.] [Freq. of gab. See {Gab}, v. i.]
   1. To talk fast, or to talk without meaning; to prate; to
      jabber. --Shak.

   2. To utter inarticulate sounds with rapidity; as, gabbling
      fowls. --Dryden.

Source : WordNet®

gabble
     n : rapid and indistinct speech [syn: {jabber}, {jabbering}]
     v : speak (about unimportant matters) rapidly and incessantly
         [syn: {chatter}, {piffle}, {palaver}, {prate}, {tittle-tattle},
          {twaddle}, {clack}, {maunder}, {prattle}, {blab}, {gibber},
          {tattle}, {blabber}]