Green’s Dictionary of Slang

1. to cheat, to short change.

1891		Sporting Times 18 Apr. 3/5: ‘Half-ounce’ On the bounce.
1960		J. Franklyn Dict. of Rhy. Sl. 73/2: half ounce Bouce (cheat) [...] When I come to count my change proper I found they ’adn’t ’arf ’arf-ounced me!
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl.
1992		R. Puxley Cockney Rabbit.

2. to beat up.

1992

R. Puxley Cockney Rabbit.