Green’s Dictionary of Slang

arse v.

[arse n.]

1. [1950s+] to reverse a vehicle.

2. [1980s] to push, to shove.

3. [1990s+] to drink, to consume.

4. [1990s+] (Aus.) to dismiss.

In phrases

arse about (v.) (also arse around)

1. [mid-17C; 1920s+] to waste time, to idly wander about.

2. [late 18C–early 19C] to turn round.

3. [1940s+] to fool around.

arse it (v.) (also ass it)

[1970s+] to leave, to exit.

arse off (v.)

[late 19C+] to leave quickly.