languedoc (n.) Look up languedoc at Dictionary.com
"language of medieval France south of the Loire," 1660s, from French langue d'oc "speech of the south of France," literally "the language of 'yes,' " from oc the word used for "yes" in southern France, from Latin hoc "this;" as opposed to langue d'oïl, from the way of saying "yes" in the north of France (Modern French oui); each from a different word in Latin phrase hoc ille (fecit) "this he (did)." The langue d'oïl has developed into standard Modern French.