Crossword Genius

Breaking: Man in Raincoat opens up to public (9)

Ross

I believe the answer is:

newsflash

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

'public' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'breaking man in raincoat opens up' is the wordplay.
I cannot quite see how this works, but
'man' could be 'ash' and 'ash' is present in the answer.
This explanation may well be incorrect...

'to' acts as a link.

Can you help me to learn more?

(Other definitions for newsflash that I've seen before include "Bulletin" , "Brief report" , "Dramatic announcement" .)

I've seen this clue in The Independent.
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