Crowd of one hundred playing golf, maybe (9)

I believe the answer is:

concourse

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

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

'one hundred playing golf maybe' is the wordplay.
'one hundred' becomes 'C' (Roman numeral).
'playing' becomes 'on' (on can mean playing or performing).
'golf maybe' becomes 'course' (I can't explain this - if you can you should believe this answer much more).
'c'+'on'+'course'='CONCOURSE'

'of' is the link.

Can you help me to learn more?

(Other definitions for concourse that I've seen before include "Crowds" , "A gathering of people" , "shopping mall, say" , "Large public area" , "Large area in, eg, railway station" .)

I've seen this clue in The 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.