percussion cap

noun

1. a small metallic cap or cup containing fulminating powder, formerly exploded by percussion to fire the charge of small arms.

percussion cap

noun

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

Word History and Origins

Origin of percussion cap¹

First recorded in 1815–25

Example Sentences

The Indians have only old percussion-cap rifles, and not too many of them.

From Project Gutenberg

The spark plug is a simple device which may be compared to the fuse or percussion cap of the cannon.

From Project Gutenberg

This flare was communicated to the percussion cap, or fulminate of mercury, at the base of the cartridge.

From Project Gutenberg

The musket was loaded, but he took off the old percussion cap and replaced it with a new one.

From Project Gutenberg

The invention of the copper percussion cap was another great improvement upon the detonating plan.

From Project Gutenberg