BANG

BANGn. The cry of a gun. That arrangement of a woman’s hair which suggests the thought of shooting her; hence the name.
[2] v.t. To admonish, protest or persuade, with a club.

Tom having taken Jane to be his wife,
His friends expect of him a better life;
For still by her example he is led,
And when she bangs her hair he bangs her head.