1. (Slang) To disgust; to cause one to lose interest in something.
2. To make a turn
3. When you turn off a road or path that you are traveling on, you leave it and start to travel on another road or path. When a road or path leaves another road or path and travels in a different direction, it turns off,

When you turn off an electrical or mechanical device, you change the controls to stop it from producing or doing something. Turn on is the opposite of turn off. Switch off and shut off are similar to turn off.

[informal] Something that turns you off offends you and causes you to lose interest in something or someone. Something about a person of the opposite sex that turns you off causes you to lose sexual or romantic interest in that person. Turn on is the opposite of turn off.