Source : WordNet®

turn off
     v 1: cause to stop operating by disengaging a switch; "Turn off
          the stereo, please"; "cut the engine"; "turn out the
          lights" [syn: {switch off}, {cut}, {turn out}] [ant: {switch
          on}]
     2: make a turn; "turn off at the parking area"
     3: cause to feel intense dislike or distaste [syn: {put off}]