Casual term for the place where one works part-time (short for アルバイト先).
バイト先が変わって、通勤時間が短くなった。
My part-time workplace changed and my commute got shorter.
週末はバイト先で忙しく働く。
I work busily at my part-time job on weekends.
バイト先の同僚と仲良くなった。
I became friendly with my coworkers at my part-time job.