1. [1950s+] to reverse a vehicle.
2. [1980s] to push, to shove.
3. [1990s+] to drink, to consume.
4. [1990s+] (Aus.) to dismiss.
1. [mid-17C; 1920s+] to waste time, to idly wander about.
2. [late 18C–early 19C] to turn round.
3. [1940s+] to fool around.
[1970s+] to leave, to exit.
[late 19C+] to leave quickly.