A Jewish language (7)
I believe the answer is:
yiddish
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a jewish language</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(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" .)