Crossword Genius

It lets you have a say on boards? (8,4)

Ross

I believe the answer is:

speaking part

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

'it lets you have a' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'say on boards?' is the wordplay.
I cannot quite understand how this works, but
'say' could be 'speak' (synonyms) and 'speak' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Guardian.
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