Word Study
langue d'oc
CIDE DICTIONARY
langue d'oc, n. [F., language of oc yes.].
The dialect, closely akin to French, formerly spoken south of the Loire (in which the word for “yes” was oc ); Proven1913 Webster]
OXFORD DICTIONARY
langue d'oc, n. the form of medieval French spoken south of the Loire, the basis of modern Proven{ccedil}al.
Etymology
OF langue language f. L lingua tongue + de of + oc (f. L hoc) the form for yes
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