langue d'oc /lɑŋˈdɔk, lɑngdɔk/
  Langue d'oc n.  The dialect, closely akin to French, formerly spoken south of the Loire (in which the word for “yes” was oc); Provençal.
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  Langue d'oc
       n : medieval provincial dialects of French formerly spoken in
           the south of France [syn: Langue d'oc French]