noun Etymology: French, from Old French, literally, language of oïl; from the French use of the word oïl for “yes” Date: 1703 french 1
LANGUE D'OÏL
Meaning of LANGUE D'OÏL in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012