Nouns

(n)bomban explosive device fused to explode under specific conditions
(n)bomb calorimeter, bombstrong sealed vessel for measuring heat of combustion
(n)turkey, bomb, dudan 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”

Verbs

(v)bombard, bombthrow bombs at or attack with bombs“The Americans bombed Dresden”
(v)fail, flunk, bomb, flush itfail to get a passing grade“She studied hard but failed nevertheless”, “Did I fail the test?”