proper noun/lil/
Lille (the capital of Nord department and the Hauts-de-France region, France)
Related: lillois, Lillois, Lilloise
Inherited from Old French l'Isle (“the Island”), from Latin Īnsula, from īnsula (“island”), whence also île. The name was resegmented (like its Dutch counterpart Rijsel): in à l'Isle (“at the Isle”), the definite article came to be considered part of the name, and it was thus interpreted as à Lille.