bomb

nouns

an explosive device fused to explode under specific conditions
bomb
is derived from
bomblet
is a type of (narrower)
device that bursts with sudden violence from internal energy
explosive device
is a type of (narrower)
weapons considered collectively
arms, implements of war, munition, weaponry, weapons system
strong sealed vessel for measuring heat of combustion
bomb, bomb calorimeter
an event that fails badly or is totally ineffectual
"the first experiment was a real turkey"; "the meeting was a dud as far as new business was concerned"
bomb, dud, turkey

verbs

throw bombs at or attack with bombs
"The Americans bombed Dresden"
bomb, bombard
is derived from
bomber
is derived from
bomber
is derived from
bombing
fail to get a passing grade
"She studied hard but failed nevertheless"; "Did I fail the test?"
bomb, fail, flunk, flush it