Crossword Genius

Set of players communicated frustration to audience (4)

Ross

I believe the answer is:

side

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'set of players' is the definition.

I can't explain the rest of the clue.

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(Other definitions for side that I've seen before include "camp" , "A quarter, or half" , "TV channel" , "Pretentious air" , "by no means a front" .)

I've seen this clue in The Independent.
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