What is the meaning of Breaker?

Something that breaks.

A machine for breaking rocks, or for breaking coal at the mines.

The building in which such a machine is placed.

A person who specializes in breaking things.

A wave breaking into foam against the shore, or against a sandbank, or a rock or reef near the surface, considered a useful warning to ships of an underwater hazard

A breakdancer.

A user of CB radio.

Clipping of shipbreaker.

Ellipsis of circuit breaker.

A horsebreaker.

Used to open a conversation or call for a response on CB radio.

A small cask of liquid kept permanently in a ship’s boat in case of shipwreck.

circuit breaker

to break (win a game when receiving)

breaker; circuit breaker

Source: wiktionary.org