Turn Back Meaning

Example :   Realising he had forgotten his briefcase, he turned back to the office.‎1914, Louis Joseph Vance, Nobody, chapter III:  Turning back, then, toward the basement staircase, she began to grope her way through blinding darkness, but had taken only a few uncertain steps when, of a sudden, she stopped short and for a little stood like a stricken thing, quite motionless save that she quaked to her very marrow in the grasp of a great and enervating fear.To return to a previous state of being.  He stopped drinking for a couple of years, but now he has turned back to his old ways.‎  Once we take this decision, there's no turning back.‎  The soldiers turned back all the refugees at the frontier.‎  In Autumn we normally turn the clocks back one hour.‎  I love that song: turn back to it!‎  When you make the bed, please always turn the sheet back over the blanket.‎William Shakespeare (1564-1616)  We turn not back the silks upon the merchants, / When we have soiled them.