To see a bomb in your dream, signifies that you may be going through a potentially explosive and trying situation in your waking life.

The bomb could represent repressed desires and unexpressed emotions that are likely to explode or burst if not dealt with soon.

It could be something within yourself, such as the desire to explode with anger over an issue that's affecting you.

To dream of a bomb threat, suggests that you are experiencing some inner anger and/or pressures which are on the verge of exploding into violence.