The Collaborative International Dictionary of English v.0.48:

Jabber \Jab"ber\, v. t.
   To utter rapidly or indistinctly; to gabble; as, to jabber
   French. --Addison.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jabber \Jab"ber\, n.
   Rapid or incoherent talk, with indistinct utterance;
   gibberish. --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

WordNet (r) 3.0 (2006):

jabber
    n 1: rapid and indistinct speech [syn: jabber, jabbering,
         gabble]
    v 1: talk in a noisy, excited, or declamatory manner [syn:
         rant, mouth off, jabber, spout, rabbit on,
         rave]

The Free On-line Dictionary of Computing (19 January 2023):

jabber

    When a network node transmits a packet longer
   than the maximum permissible length, usually due to a fault
   condition.

   (1996-05-10)