What is the meaning of Immobiliser?

Something or someone that immobilises.

1. A splint.
2. An electronic security device fitted to an automobile that prevents the engine from running unless the correct key (or other token) is present.
3. A fairy chess piece that cannot capture other pieces but instead prevents adjacent pieces from moving.

A splint.

An electronic security device fitted to an automobile that prevents the engine from running unless the correct key (or other token) is present.

A fairy chess piece that cannot capture other pieces but instead prevents adjacent pieces from moving.

to immobilize

Source: wiktionary.org