faubourg.

From Old French fors bourg (“settlement outside the ramparts”), from Old French fors (“outside”) + bourg (“town”). Alternatively it may be from faux-bourg ("false borough") which isn't attested until the 15th century (later than fors bourg) but is found in 1380 in Latin as falsus burgus. Possibly a corruption of Middle High German phâlburgere (“burghers of the pale”) (also spelt falborgere) as in a person living outside the city walls but inside the palisades. An 18th century French translation of an Old French charter of 1365 speaks of 'des faux bourgeois dits en allemand Pfalbourguers' which evidences the possibility it evolved from phalburgensis or a corrupt translation faux bourgeois.