Unintelligible jargon (12)
'unintelligible jargon' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for gobbledygook that I've seen before include "bunk?" , "Nonsense!" , "Meaningless language" , "Officialese" .)
(Another definition for bafflegab that I've seen is " The jargon".)