Fragments of a shell or bomb (8)
I believe the answer is:
shrapnel
'fragments of a shell or bomb' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for shrapnel that I've seen before include "Bits of an exploded shell" , "bursting shells" , "Projectile fragments" , "Dangerous fragments" , "Scattered pieces from a bursting shell" .)