Percussion cap, e.g. (9)
I believe the answer is:
detonator
(Other definitions for detonator that I've seen before include "cap" , "Explosion starter" , "One sets off bang" , "this will cause an outburst" , "That has explosive effect" .)
I believe the answer is:
detonator
(Other definitions for detonator that I've seen before include "cap" , "Explosion starter" , "One sets off bang" , "this will cause an outburst" , "That has explosive effect" .)