bomb in WordNet English dictionary

1. an explosive device fused to explode under specific conditions
   bomb 
   
2. strong sealed vessel for measuring heat of combustion
   bomb calorimeter  bomb 
   
3. 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"
   turkey  bomb  dud 
   

1. throw bombs at or attack with bombs
   "The Americans bombed Dresden"
   bombard  bomb 
   
2. fail to get a passing grade
   "She studied hard but failed nevertheless"; "Did I fail the test?"
   fail  flunk  bomb  flush it