1. a device that prevents a vehicle from being started or moved, typically used as an anti-theft measure
Usage: automotive
2. a medical device used to restrict movement of a body part to aid healing
Usage: medical

Examples

• The car’s immobilizer prevented the thief from starting the engine.
• She installed an immobilizer system after her car was stolen last month.
• The doctor fitted an immobilizer on his injured wrist.
• Modern vehicles come equipped with electronic immobilizers as standard.
• The knee immobilizer helped stabilize her leg after surgery.
• Without the proper key fob, the immobilizer keeps the car disabled.