What does the word vernacular mean?

Usage examples for vernacular

  1. He had had, in Army vernacular, " cold feet." – Leaves from a Field Note-Book by J. H. Morgan
  2. To use the Russian vernacular, he was born in his shirt. – Comrade Kropotkin by Victor Robinson
  3. Now she was, in the uncouth vernacular of the country, up against it for fair! – Quick Action by Robert W. Chambers
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