Определение wrong side of the tracks в Английский Язык Английский Язык словарь
The part of town that is not inhabited by the wealthy (from municipalities where the sections were divided by the railroad tracks). May refer to area where the working class, poor or extremely poor live
He grew up on the wrong side of the tracks, but he made a success of himself.
(deyim) A poor or less prestigious part of town. [with ref. to the railway tracks of American towns, once serving as a line of demarcation between rich and poor quarters.]