The Collaborative International Dictionary of English v.0.48:

Jargle \Jar"gle\, v. i. [Cf. OSw. jerga to repeat angrily, to
   brawl, Icel. jarg tedious iteration, F. jargonner to talk
   jargon. See Jargon gabble.]
   To emit a harsh or discordant sound. [Obs.] --Bp. Hall.
   [1913 Webster]