fragmentation bomb

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An aerial antipersonnel bomb that scatters shrapnel over a wide area upon explosion.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun military An antipersonnel bomb that scatters shrapnel when it explodes

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a bomb with only 10 to 20 per cent explosive and the remainder consisting of casings designed to break into many small high-velocity fragments; most effective against troops and vehicles