The form of medieval French spoken south of the Loire, generally characterized by the use of oc to mean ‘yes’, and forming the basis of modern Provençal. Compare with Occitan.
from Old French langue 'language' (from Latin lingua 'tongue'), d' (from de 'of'), and oc (from Latin hoc) 'yes'. Compare with langue d'oïl.
Definition of langue d'oc in:
- The US English dictionary