Yiddishism definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a Yiddish word, phrase, or idiom
Yiddishism definition by American Heritage Dictionary
A linguistic feature of Yiddish, especially a Yiddish idiom or phrasing that appears in another language.