| bomb | (noun) an explosive device fused to explode under specific conditions | - |
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| (noun) strong sealed vessel for measuring heat of combustion | Synonyms: bomb calorimeter |
| (noun) an event that fails badly or is totally ineffectual | Synonyms: dud, turkey |
| (verb) throw bombs at or attack with bombs | Synonyms: bombard |
| (verb) fail to get a passing grade | Synonyms: fail, flunk, flush it |
| firebomb | (noun) a bomb that is designed to start fires; is most effective against flammable targets (such as fuel) | Synonyms: incendiary, incendiary bomb |
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| (verb) attack with incendiary bombs | - |
| photobomb | (verb) to jump into someone's photo | - |
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