Definition of percussion cap in English:

percussion cap


  • A small amount of explosive powder contained in metal or paper and exploded by striking, used in toy guns and formerly in firearms.

    • ‘With the introduction of the percussion cap in 1822, and the conical Mini rifle-bullet in 1849, the infantry attack column was doomed, as the Russians found out to their cost in the Crimean war.’
    • ‘In 1915 a Belgian company designed a grenade which contained a spring-loaded striker, percussion cap, fuse and detonator.’
    • ‘The trigger detonates a pre-loaded percussion cap which both blasts the projectile out the front of the launcher and ignites the rocket.’
    • ‘The first handgun appeared with a wrought iron forged barrel in the 15th century, then came the matchlock in the 15th century, the wheel-lock and flintlock in the 16th century, and the percussion cap arriving early in the 19th century.’
    • ‘The hammer fell, hitting the percussion cap at the base of the cartridge: the cordite charge ignited, accelerating the bullet to over 600 meters a second (something I remembered from my school days).’