Sara, bickering, holds tongue (6)
I believe the answer is:
'tongue' is the definition.
(Arabic is an example)
'sara bickering holds' is the wordplay.
'holds' indicates the answer is hidden within the clue.
'ARABIC' is hidden in the letters of 'sara bickering'.
(Other definitions for arabic that I've seen before include "Language (of numbers)" , "Gum --, ingredient of glue and incense" , "CIA bar on this Middle East language" , "Final" , "1 [GCSE]" .)