Be involved with playing area (5)

I believe the answer is:

court

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'playing area' is the definition.
(court is a kind of playing area)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for court that I've seen before include "Work as solicitor" , "Pay suit to, woo" , "Assembly to conduct 12 across" , "Sports area; woo" , "Woo; tribunal" .)

I've seen this clue in The Daily Express.

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