Definition of breechblock in English:

breechblock

noun

  • A metal block that closes the aperture at the back part of a rifle or gun barrel.

    • ‘The extractors eject the cartridge case and retain the breechblock in the fully open position.’
    • ‘Tip the end of the breechblock downward enough for the striker to slide out the back of the block.’
    • ‘In addition to new breechblocks and hammers, the older extractor was replaced with a newer design.’
    • ‘Lowering the operating lever dropped the breechblock and extracted the spent cartridge.’
    • ‘This caused delay of several days, but once the new breechblocks were completed one by one the guns were rushed to use.’

Pronunciation:

breechblock

/ˈbrēCHbläk/