bomb

1. An explosive device used or intended as a weapon, especially, one dropped from an aircraft.
2. The atomic bomb. (dated) · During the Cold War, everyone worried about the bomb sometimes.
3. Events or conditions that have a speedy destructive effect. (figuratively)
4. Any explosive charge. (colloquial) · The mineworkers are setting their bombs.
5. A bag or balloon containing a substance such as water, flour, or paint, designed to burst and splatter. · The children are playing with water bombs in the garden.· Activists threw paint bombs at the famous artwork.
6. Anything that is at risk of exploding (literally) or that has exploded. (colloquial, figuratively) · That turkey fryer is a bomb waiting to go off.· The gas leak tragically turned the house into a bomb.
7. A fart. (colloquial) · He just dropped a bomb.
8. A failure; an unpopular commercial product. (slang) · box-office bomb

Plural bombs