Crossword Genius

Good time for tee occupant (4)

Ross

I believe the answer is:

ball

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'good time' is the definition.
(thesaurus)

I cannot understand how the remainder of the clue works.

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(Other definitions for ball that I've seen before include "Party" , "Bouncer, say" , "Old song: 'After the .... was over'" , "Formal dance gathering" , "Round object - dance" .)

I've seen this clue in the Sydney Morning Herald.
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