Green’s Dictionary of Slang

(UK Und.) to beat, to thrash.

c.1698		B.E. Dict. Canting Crew n.p.: Dum-found to beat soundly. I dumfounded the sawcy Rascal, I bang’d his Back tightly.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1859, 1860		Hotten Dict. of Modern Sl. etc.
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.