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breechblock

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breech⋅block

[breech-blok]
–noun Ordnance.
a movable piece of metal for closing the breech in certain firearms.
Also, breech-block.


Origin:
1880–85; breech + block
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To breechblock
breech·block   (brēch'blŏk')   
n.  The metal part that closes the breech end of the barrel of a breechloading gun and that is removed to insert a cartridge and replaced before firing.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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