Definition of yellow badge in English:

yellow badge

noun

historical
  • A badge of identification, typically of yellow cloth, that Jews have sometimes been required to wear, especially in Nazi Germany and other parts of Europe under Nazi rule in 1938–45.

    A requirement to wear a distinctive badge has been imposed on Jews at various times; the wearing of badges of yellow (or sometimes white) cloth is first documented in the 13th century.

Origin

Mid 17th century.