a High German language with an admixture of vocabulary from Hebrew and the Slavic languages, written in Hebrew letters, and spoken mainly by Jews in eastern and central Europe and by Jewish emigrants from these regions and their descendants.
a language spoken as a vernacular by Jews in Europe and elsewhere by Jewish emigrants, usually written in the Hebrew alphabet. Historically, it is a dialect of High German with an admixture of words of Hebrew, Romance, and Slavonic origin, developed in central and E Europe during the Middle Ages
adjective
2.
in or relating to this language
Word Origin
C19: from German jüdisch, from JudeJew
Word Origin and History for Yiddish
1875, from Yiddish yidish, from Middle High German jüdisch "Jewish" (in phrase jüdisch deutsch "Jewish-German"), from jude "Jew," from Old High German judo, from Latin Judaeus (see Jew). The English word has been re-borrowed in German as jiddisch.