Fretin (French pronunciation: [fʁətɛ̃]) is a commune in the Nord department in northern France.[3] It is in the south of the Métropole Européenne de Lille.
It contains the Fretin triangle, a high speed flying junction joining the HSL 1 railway line from Brussels to the LGV Nord from Paris to the Channel Tunnel.
Bendy argent and azure. (Fretin, Saultain and Wannehain use the same arms.)
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