A Jewish language (7)
I believe the answer is:
yiddish
'a jewish language' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for yiddish that I've seen before include "Language spoken by Jews" , "Mixed language used by Jews of central and eastern Europe" , "Nosh, for example" , "European Jews' vernacular" , "I did shy away from Jewish language" .)