Definition of "Yiddish"

Of or pertaining to the Yiddish language.  examples

(informal) Jewish; relating to Yiddishkeit.  examples

A West Germanic, or more specifically High German, language that developed from Middle High German dialects, with an admixture of vocabulary from multiple source languages including Hebrew-Aramaic, Romance, Slavic, English, etc., and mostly written in Hebrew characters which is used mainly among Ashkenazic Jews from central and eastern Europe.  quotations  examples