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percussion cap

a small metallic cap or cup containing fulminating powder, formerly exploded by percussion to fire the charge of small arms.
Origin of percussion cap
First recorded in 1815-25 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for percussion cap
Historical Examples
  • This flare was communicated to the percussion cap, or fulminate of mercury, at the base of the cartridge.

    Whispering Wires Henry Leverage
  • He saw a spark, heard the bang of the percussion cap, but there was nothing more.

    Shaman Robert Shea
  • You feel it your duty to unravel the secret of the percussion cap?

    Elusive Isabel Jacques Futrelle
  • The Countess was disappointed because the percussion cap was not exploded.

    The Lighted Match Charles Neville Buck
  • But a weapon which required a percussion cap for its discharge had nothing to do with Violet Heredith's death.

    The Hand in the Dark Arthur J. Rees
  • The spark plug is a simple device which may be compared to the fuse or percussion cap of the cannon.

    Aviation Engines Victor Wilfred Pag
  • There was a quick pressure, a snap like the crack of a percussion cap, and all was over.

  • Chemistry advances, like the isolation of mercury fulminate in 1800, led to the invention of the percussion cap and other primers.

  • Cyrus Harding could certainly have fabricated a percussion cap.

    The Mysterious Island Jules Verne
  • This piece was altered from flint lock to pill-percussion lock, and later to the percussion cap lock.

    The Way to the West Emerson Hough
British Dictionary definitions for percussion cap

percussion cap

a detonator consisting of a paper or thin metal cap containing material that explodes when struck and formerly used in certain firearms
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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