Green’s Dictionary of Slang

bandit n.

1. [1960s+] (US) a coin-operated gaming machine, a fruit machine [abbr. SE one-armed bandit].

2. [1970s] (US) an attractive woman.

3. a villain, a criminal.

4. see arse bandit n.

SE in slang uses

In phrases

like a bandit (adv.)

[1970s+] (US) enthusiastically, very fast, very successfully.