Yes, bang is a Scrabble word!
...and is worth 7 points in Scrabble, and 10 points in Words with Friends
bang
Adverb
1. Directly
Verb
1. Strike violently
2. To produce a sharp often metallic explosive or percussive sound
3. Close violently
4. Move noisily
5. Have sexual intercourse with
6. Leap, jerk, bang
Noun
1. A vigorous blow
2. A sudden very loud noise
3. A border of hair that is cut short and hangs across the forehead
4. The swift release of a store of affective force
5. A conspicuous success
What Scrabble words can I make with the letters in bang?
3 Letter Words
2 Letter Words