Crossword Genius

Outlaw robbing a bank (3)

Ross

I believe the answer is:

ban

I'm a little stuck... Click here to teach me more about this clue!

'outlaw' is the definition.
(banning is a kind of outlawing)

'robbing a bank' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is present in the answer.
A single letter 'b' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for ban that I've seen before include "Exile" , "Officially prohibit" , "Veto" , "Censor or proscribe" , "Hungarian governor < to forbid" .)

I've seen this clue in the Evening Standard.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.