1. A device that prevents a vehicle from being started or operated without the correct key or authorization code.
Usage: Also spelled 'immobilizer' in U.S. English.; Commonly used in automotive contexts.
2. A medical device or substance used to keep a body part or joint stationary during healing.
Usage: Medical/healthcare context.

Examples

• The car's immobiliser prevents thieves from hotwiring the engine.
• Modern vehicles are equipped with electronic immobilisers as standard security features.
• The doctor applied an immobiliser to the patient's fractured arm.
• Without the correct key fob, the immobiliser will not allow the car to start.
• The immobiliser on my motorcycle has reduced theft in my neighborhood.
• After the surgery, the orthopedic surgeon fitted an immobiliser to protect the healing bone.