A fragmentation bomb is a type of explosive device that is designed to create high velocity shrapnel, which can cause extensive damage to people and property. Some possible synonyms for the term "fragmentation bomb" might include "shrapnel bomb," "splinter bomb," or "shell shrapnel bomb." Another possibility might be to use a more specific term to describe the type of fragmentation bomb being used, such as a "cluster bomb" or a "radiation bomb." Ultimately, the choice of words will depend on the specific context in which the term is being used, as well as the intended meaning and audience.