breaker

1 [brey-ker]
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.
a.
brake1 ( def 4 ).
b.
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.
a.
a building where coal delivered from a mine is broken up and sorted.
b.
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.
interjection
10.
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.)

Origin:
1125–75; Middle English; see break, -er1


2. See wave.
Dictionary.com Unabridged

breaker

2 [brey-ker]
noun Nautical.
a small water cask for use in a boat.

Origin:
1825–35; said to be alteration of Spanish bareca, variant of barrica small keg

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
breaker1 (ˈbreɪkə)
 
n
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

breaker2 (ˈbreɪkə)
 
n
a small water cask for use in a boat
 
[C19: anglicized variant of Spanish barrica, from French (Gascon dialect) barrique]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

breaker
"heavy ocean wave," 1680s, agent noun from break. Related: Breakers.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
breaker   (brā'kər)  Pronunciation Key 
  1. A wave that crests or breaks into foam, as against a shoreline.

  2. A circuit breaker.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The best board jockeys in the world come for breakers bigger than your house.
Expulsion is out of balance, especially when you consider that other law
  breakers are allowed to stay.
The other part was that they were inspirations to me as ground breakers for
  their times.
We set out as quickly as possible under a press of sail, and stood down towards
  the breakers, going as near as possible.
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