a language used by Jews in central and eastern Europe before the Holocaust. It was originally a German dialect with words from Hebrew and several modern languages, and still has some 200,000 speakers, mainly in the US, Israel, and Russia:Faigele was mum’s name in Yiddish
relating to Yiddish:a Yiddish word
late 19th century: from Yiddish yidish (daytsh) 'Jewish (German)'
Yiddish in other Oxford dictionaries
Definition of Yiddish in the US English dictionary