What is another word for stopping device?

The best substitute for "stopping device" depends on the specific context. Here are some options depending on the situation:

General:

* Brake

* Arrestor

* Damper

* Retarder

* Check

* Limiter

* Suppressor

Specific:

* Clutch (for engines)

* Throttle (for engines)

* Valve (for fluids)

* Switch (for electrical circuits)

* Circuit breaker (for electrical circuits)

* Emergency brake (for vehicles)

* Speed bump (for vehicles)

* Muffler (for noise)

Figurative:

* Obstacle

* Barrier

* Hinderance

* Roadblock

* Bottleneck

Please provide more context about the specific situation to get a more precise synonym for "stopping device." For example:

* What is the stopping device used for?

* What type of movement is being stopped?

* What is the intended outcome?

With more information, I can give you a more relevant answer.