ignitionswitch
nounUK /ɪɡˈnɪʃən swɪtʃ/
US /ɪɡˈnɪʃən swɪtʃ/
The small key slot or button you turn to start a car.
She put the key in the ignition switch and the engine started.
RELATED WORDS
OTHER MEANINGS
2. A device that turns on the spark in an engine.
The mechanic checked the ignition switch to see why the car would not start.
3. A switch that starts a machine or motor.
He flipped the ignition switch on the generator.
4. The part of a vehicle where the key goes.
The ignition switch was broken, so the key would not turn.