Device that bursts with sudden violence from internal energy(noun)
WordNet. Princeton University. 2010.
Use "explosive device" in a sentence
""So … let me see now … what it amounts to is that you both believe that Charles Neville Steyning-Ratcliffe blew himself up while tampering with — or perhaps setting — an explosive device … which according to you was probably intended as a trap for — who was it""
"I have taped a virus ampoule to a simple explosive device which will be detonated at 3.45 this afternoon in Lower Hampton, Norfolk."