Definition of breechblock in English:

breechblock

Syllabification: breech·block
Pronunciation: /ˈbrēCHˌbläk
 
/

noun

  • A metal block that closes the aperture at the back part of a rifle or gun barrel.
    More example sentences
    • In addition to new breechblocks and hammers, the older extractor was replaced with a newer design.
    • Tip the end of the breechblock downward enough for the striker to slide out the back of the block.
    • The extractors eject the cartridge case and retain the breechblock in the fully open position.

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Pronunciation: skōSH
noun
a small amount; a little