Definition of lingo noun from the Oxford Advanced American Dictionary

     

    lingo

     noun
    noun
    NAmE//ˈlɪŋɡoʊ//
     
    [singular](informal)
     
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  1. 1 expressions used by a particular group of people synonym jargon baseball lingo
  2. 2 (often humorous) a language, especially a foreign language He doesn't speak the lingo.
See the Oxford Advanced Learner's Dictionary entry: lingo