Crossword Genius

Racecourse punters not exploited yet (9)

Ross

I believe the answer is:

newmarket

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

'racecourse' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for newmarket that I've seen before include "Racecourse - card game" , "Racing town" , "horse-racing centre" , "course?" , "Betting card came" .)

I've seen this clue in The Times and The Sunday Times.
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.