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[brest-bohn] /ˈbrɛstˌboʊn/
the sternum.
Origin of breastbone
before 1000; Middle English brust-bon, Old English brēostbān. See breast, bone Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for breastbone
Historical Examples
  • The breastbone of this Whale is a roughly-triangular bone made up of three pieces.

  • I've 'eard o' men dying when you 'it 'em fair on the breastbone.

    Soldiers Three, Part II. Rudyard Kipling
  • Be especially careful not to break the gall-bag, which is near the upper part of the breastbone, and attached to the liver.

  • He hit Ling on the lower end of the breastbone, where his belly would be softest.

    The Devil's Asteroid Manly Wade Wellman
  • He could hear the other's breathing, long and slow; the breathing of a man with a hundredweight or so on the breastbone.

  • Then lay them on a board and roll with a rolling-pin to flatten the breastbone.

    Housekeeping in Old Virginia Marion Cabell Tyree
  • He glanced quickly around as he slashed another Saracen from pate to breastbone.

    ...After a Few Words... Gordon Randall Garrett
  • For answer Tom Rochford pressed his hand to his breastbone and hiccupped.

    Ulysses James Joyce
  • Cut off the feet of a chicken, break the breastbone flat, but be careful not to break the skin.

    Dressed Game and Poultry la Mode Harriet A. de Salis
  • The rib cage includes the breastbone and twelve pairs of ribs.

    Physiology Ernest G. Martin
British Dictionary definitions for breastbone


the nontechnical name for sternum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for breastbone

"sternum," Old English breostban; see breast (n.) + bone (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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breastbone in Medicine

breastbone breast·bone (brěst'bōn')
See sternum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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breastbone in Science
See sternum.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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