Source : Webster's Revised Unabridged Dictionary (1913)

Jabber \Jab"ber\, v. i. [imp. & p. p. {Jabbered}; p. pr. & vb.
   n. {Jabbering}.] [Cf. {Gibber}, {Gabble}.]
   To talk rapidly, indistinctly, or unintelligibly; to utter
   gibberish or nonsense; to chatter. --Swift.

Jabber \Jab"ber\, v. t.
   To utter rapidly or indistinctly; to gabble; as, to jabber
   French. --Addison.

Jabber \Jab"ber\, n.
   Rapid or incoherent talk, with indistinct utterance;
   gibberish. --Swift.

Jabber \Jab"ber\, n.
   One who jabbers.

Source : WordNet®

jabber
     n : rapid and indistinct speech [syn: {jabbering}, {gabble}]
     v : talk in a noisy, excited, or declamatory manner [syn: {rant},
          {mouth off}, {spout}, {rabbit on}, {rave}]

Source : Free On-Line Dictionary of Computing

jabber
     
         An event that occurs when a device on a network
        using the {LAT} {protocol} continues to broadcast its
        availability even though its availability status is known by
        the network.
     
        (1996-05-10)