Yes, bomb is a Scrabble word!
...and is worth 10 points in Scrabble, and 13 points in Words with Friends
bomb
Verb
1. Throw bombs at or attack with bombs
2. Fail to get a passing grade
Noun
1. An explosive device fused to explode under specific conditions
2. Strong sealed vessel for measuring heat of combustion
3. An event that fails badly or is totally ineffectual
What Scrabble words can I make with the letters in bomb?
3 Letter Words
2 Letter Words