Definition

Noun: A security device that is part of a vehicle's ignition system, designed to prevent the engine from starting without the correct key. It is a physical and electrical lock integrated into the ignition switch.

Usage

The term "ignition lock" refers specifically to the locking mechanism within the ignition switch assembly. It is used to describe the component that secures the vehicle. - The mechanic had to replace the faulty ignition lock. - Modern cars often have an electronic ignition lock instead of a traditional tumbler lock.

Advanced Usage

• As a security feature: The primary purpose of the ignition lock is as an anti-theft device.
  • The vehicle's ignition lock is its first line of defense against theft.

Variants and Related Words

• Ignition switch: This is the broader assembly that includes the ignition lock, the electrical switch, and often the key cylinder. The ignition lock is a component the ignition switch.
• Steering lock: A separate but often interconnected device that locks the steering wheel when the key is removed. It is frequently part of the same column housing as the ignition lock.

Synonyms

• Ignition cylinder (specifically refers to the key cylinder part of the lock)
• Key lock (a more general term, but can be used contextually for the ignition)

Related Phrases

• "To bypass the ignition lock": To start a vehicle without using the proper key, typically through illicit means.
  • Thieves sometimes attempt to bypass the ignition lock to steal a car.

Noun

1. a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key