noun

• 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.
• (chiefly in the plural) 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
• (colloquial) A breakdancer.
• (US, dated) A user of CB radio.
• A horsebreaker.
• A small cask of liquid kept permanently in a ship's boat in case of shipwreck.
• (primarily plural) Clipping of shipbreaker. [One who works in shipbreaking.]
• (electrical engineering) Ellipsis of circuit breaker. [(electricity) An electrical switch capable of opening and closing an electrical circuit in all operating conditions, including fault situations.]