blasting cap
Noun
Meaning
a small tube filled with detonating substances; used to detonate high explosives
Source: WordNetSynonyms
Hypernyms
Examples
An electrical blasting cap for triggering the mine was inserted through a small hole in the side.
The mine can be detonated by any mechanism that activates the blasting cap.
While the risk of an explosion without the use of a blasting cap is minimal for fresh dynamite, old dynamite is dangerous.