This will give some edge to the news, in a way (9)

I believe the answer is:

whetstone

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'this will give some edge' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'to the news in a way' is the wordplay.
'in a way' is an anagram indicator.
'to'+'the'+'news'='tothenews'
'tothenews' anagrammed gives 'WHETSTONE'.

Can you help me to learn more?

(Other definitions for whetstone that I've seen before include "Sharpener" , "For sharpening edged tools or knives" .)

I've seen this clue in The Irish News.

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