|Noah Webster's Dictionary|
1. (p. pr. & vb. n.) of Jangle.
2. (a.) Producing discordant sounds.
3. (n.) Idle babbling; vain disputation.
4. (n.) Wrangling; altercation.
Int. Standard Bible Encyclopedia
jan'-gling (mataiologia, "vain discourse" "babbling"): This word is not found in the American Standard Revised Version; once only in the King James Version (1 Timothy 1:6). The American Standard Revised Version has "vain talking," instead of "vain jangling," and evidently means proud, self-conceited talking against what God has revealed and against God Himself.
Jangling (1 Occurrence)
1 Timothy 1:6 From which some having swerved have turned aside unto vain jangling; (KJV WBS)