Meaning

• To dismiss; to fire.

• To power down, to switch off, to put out of operation, to deactivate (an appliance, light, mechanism, functionality etc.).

  "Turn off the machine and unplug it when you leave."

• To rotate a tap or valve so as to interrupt the outflow of liquid or gas.

  "Remember to turn the tap off once you've finished so you don't waste water."

• To repulse, disgust, or discourage (someone).

  "Cigarette smoking really turns me off."

• To leave a road; to exit.

  "Turn off at the next exit so we can have lunch."