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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. 2018.
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Examples from the Web for percussion cap
Historical Examples
  • He saw a spark, heard the bang of the percussion cap, but there was nothing more.

    Shaman Robert Shea
  • Cyrus Harding could certainly have fabricated a percussion cap.

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

  • 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
  • That strikes a percussion cap, and ignites a fusee, and out flashes a red light.

    Fighting the Sea Edward A. Rand
  • This flare was communicated to the percussion cap, or fulminate of mercury, at the base of the cartridge.

    Whispering Wires

    Henry Leverage
  • Moreover, the percussion cap was unexploded, which seemed to make its presence in the grate even more difficult of explanation.

    The Hand in the Dark Arthur J. Rees
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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