blasting cap

Noun
  1. A small tube filled with detonating substances;
    Used to detonate high explosives (synset 102853298)
    is a 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
    has: fulminate of mercury, fulminating mercury, mercury fulminate - a fulminate that when dry explodes violently if struck or heated; used in detonators and blasting caps and percussion caps

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