breaker

¹ American  

[bray-ker] / ˈbreɪ kər /

noun

1. a person or thing that breaks.

2. a wave that breaks or dashes into foam.

3. Citizens Band Radio Slang. a person who indicates a wish to transmit a message, as by breaking in on a channel.

4. Also called breaker strip. Automotive. a strip of fabric under the tread of a pneumatic tire casing, designed to protect the carcass.

5. Textiles.

   1. brake.

   2. a machine that separates the fiber from foreign matter in preparation for the carding process.

6. Also called prairie breaker. a plow with a long, low moldboard for turning virgin land.

7. Electricity. circuit breaker.

8. Mining.

   1. a building where coal delivered from a mine is broken up and sorted.

   2. a machine that reduces large lumps of coal or ore to a size that can be accommodated by a conveyor belt.

9. a break dancer.

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interjection

1. Citizens Band Radio Slang. (used to announce that a person is about to transmit a message or question on a channel, especially one already in use.)

breaker ² American  

[bray-ker] / ˈbreɪ kər /

noun

Nautical.

1. a small water cask for use in a boat.

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breaker ¹ British  

/ ˈbreɪkə /

noun

1. a small water cask for use in a boat

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breaker ² British  

/ ˈbreɪkə /

noun

1. a person or thing that breaks something, such as a person or firm that breaks up old cars, etc

2. a large wave with a white crest on the open sea or one that breaks into foam on the shore

3. electronics short for circuit breaker

4. a machine or plant for crushing rocks or coal

5. Also called: breaking plough. a plough with a long shallow mouldboard for turning virgin land or sod land

6. textiles a machine for extracting fibre preparatory to carding

7. an operator on citizens' band radio

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breaker Scientific  

/ brā′kər /

1. A wave that crests or breaks into foam, as against a shoreline.

2. A circuit breaker.

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Synonym Usage

See wave.

Etymology

Origin of breaker¹

First recorded in 1125–75; break + -er ¹ ( def. )

Origin of breaker²

First recorded in 1825–35; said to be alteration of Spanish bareca, variant of barrica “small keg”

Example Sentences

See Examples For:

breaker

For Milwaukee-based Artisan, UBS having to hold more capital is a deal breaker.

From The Wall Street Journal ● Oct. 1, 2026

Not quite a case of "No Alvarez No Problem", but he was hardly a deal breaker for Arsenal, who still look best equipped to win another title at the conclusion of the transfer window.

From BBC ● Sep. 2, 2026

On Wednesday, regulators were obliged to enforce the circuit breaker, suspending all trading temporarily, for the second consecutive day and the tenth time this year.

From MarketWatch ● Jul. 29, 2026

He said musicians at the venue described "smoke from a circuit breaker near the stage followed by the power going out and an explosion".

From Barron's ● Jul. 12, 2026

Working alone, each was a top-notch code breaker.

From "The Woman All Spies Fear" by Amy Butler Greenfield