Battle in North American city centre following return of Trump (9)

I believe the answer is:

trafalgar

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

'battle' is the definition.
(Trafalgar is an example)

I don't understand how the remainder of the clue works.

(Other definitions for trafalgar that I've seen before include "Eighteen zero five naval battle" , "Nelson's eighteen hundred and five victory" , "Public space in central London" , "1805 naval battle" , "Famous naval battle" .)

I've seen this clue in The Guardian.

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.