Lingua Franca /(lĭṉ"gwȧ frăṉ"kȧ)/

Lin·gua Fran·ca

Lingua Franca

n.
  1. The commercial language of the Levant, -- a mixture of the languages of the people of the region and of foreign traders.
  2. Any hybrid or other language used over a wide area as a common or commercial tongue among peoples of different speech.