News flash causing a furrowed brow? (8)

I believe the answer is:

headline

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'news' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for headline that I've seen before include "Article title" , "Largest newspaper text" , "streamer, perhaps" , "Newspaper title" , "Top (a concert bill)" .)

I've seen this clue in The Globe and Mail.

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