definition of lingua franca
A lingua franca (/ Ë l Éª Å É¡ w É Ë f r Ã¦ Å k É /), also known as a bridge language, common language, trade language or vehicular language, is a language or dialect systematically (as opposed to occasionally, or casually) used to make communication possible between people who do not share a native language or dialect, particularly when it is a third language that is distinct from both native languages.