Definition of Yinglish in English:

Yinglish

Pronunciation /ˈjɪnɡlɪʃ/

noun

humorous US
  • (A name for) a blend of English and Yiddish, especially one spoken in the United States; a form of English containing many Yiddishisms or a form of Yiddish containing many Anglicisms.

adjective

humorous US
  • Especially of language: blending English and Yiddish features or characteristics; of or relating to Yinglish.

Origin

1950s. From Yi- + -nglish.