percussion cap

/pərˌkʌʃən kæp/
IPA guide

Other forms: percussion caps

Definitions of percussion cap
  1. noun
    a detonator that explodes when struck
    see moresee less
    type of:
    cap, detonating device, detonator
    a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
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