Bang

1. To make a loud noise, as if with a blow or succession of blows; as, the window blind banged and waked me; he was banging on the piano.
2. To cut squarely across, as the tail of a hors, or the forelock of human beings; to cut (the hair).
3. To beat or thump, or to cause ( something) to hit or strike against another object, in such a way as to make a loud noise; as, to bang a drum or a piano; to bang a door (against the doorpost or casing) in shutting it.
4. The sound produced by a sudden concussion.
5. The short, front hair combed down over the forehead, esp. when cut squarely across; a false front of hair similarly worn.
6. To beat, as with a club or cudgel; to treat with violence; to handle roughly.
7. A blow as with a club; a heavy blow.