Yid·dish /ˈjɪdɪʃ/
  意第緒語
  Yid·dish n.  A language used by German and other Jews, being a Middle German dialect developed under Hebrew and Slavic influence. It is written in Hebrew characters.
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  Yiddish
       n : a dialect of High German including some Hebrew and other
           words; spoken in Europe as a vernacular by many Jews;
           written in the Hebrew script