Breaker (noun)

1. A device that opens a circuit when it exceeds a specified current.
2. A machine or device used to break up or crush something.
3. A wave that breaks into foam on a shore.

Origin:

From break + -er.

Examples:

1. An electrical breaker is a safety device that helps prevent electrical fires and protects the electrical system.
2. The demolition crew used a hydraulic breaker to demolish the building.
3. Surfers often seek out the biggest and best breaker waves to ride.
4. The breaker trips when the current in the circuit becomes too high.
5. The breaker crushed the concrete blocks into smaller pieces for disposal.